/* ============================================
   MSST - Marcel's Security and Software Technologies
   Professional CSS Stylesheet

   Built with Utopia Fluid Responsive Design
   @link https://utopia.fyi
   ============================================ */

/* ============================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ============================================ */

:root {
    /* === UTOPIA FLUID TYPE SCALE ===
     @link https://utopia.fyi/type/calculator?c=320,16,1.2,1240,20,1.25,5,2 */
    --step--2: clamp(0.6944rem, 0.6727rem + 0.1087vi, 0.8rem);
    --step--1: clamp(0.8333rem, 0.7927rem + 0.2033vi, 1rem);
    --step-0: clamp(1rem, 0.9348rem + 0.3261vi, 1.25rem);
    --step-1: clamp(1.2rem, 1.1024rem + 0.4878vi, 1.5625rem);
    --step-2: clamp(1.44rem, 1.2996rem + 0.7022vi, 1.9531rem);
    --step-3: clamp(1.728rem, 1.5307rem + 0.9864vi, 2.4414rem);
    --step-4: clamp(2.0736rem, 1.8008rem + 1.364vi, 3.0518rem);
    --step-5: clamp(2.4883rem, 2.1156rem + 1.8636vi, 3.8147rem);

    /* === UTOPIA FLUID SPACE SCALE ===
     @link https://utopia.fyi/space/calculator?c=320,16,1.2,1240,20,1.25,5,2 */
    --space-3xs: clamp(0.25rem, 0.2283rem + 0.1087vi, 0.3125rem);
    --space-2xs: clamp(0.5rem, 0.4565rem + 0.2174vi, 0.625rem);
    --space-xs: clamp(0.75rem, 0.6848rem + 0.3261vi, 0.9375rem);
    --space-s: clamp(1rem, 0.9348rem + 0.3261vi, 1.25rem);
    --space-m: clamp(1.5rem, 1.3913rem + 0.5435vi, 1.875rem);
    --space-l: clamp(2rem, 1.8696rem + 0.6522vi, 2.5rem);
    --space-xl: clamp(3rem, 2.7826rem + 1.087vi, 3.75rem);
    --space-2xl: clamp(4rem, 3.7391rem + 1.3043vi, 5rem);
    --space-3xl: clamp(6rem, 5.5652rem + 2.1739vi, 7.5rem);

    /* One-up pairs for more dramatic spacing changes */
    --space-3xs-2xs: clamp(0.25rem, 0.1196rem + 0.6522vi, 0.625rem);
    --space-2xs-xs: clamp(0.5rem, 0.3478rem + 0.7609vi, 0.9375rem);
    --space-xs-s: clamp(0.75rem, 0.5761rem + 0.8696vi, 1.25rem);
    --space-s-m: clamp(1rem, 0.7174rem + 1.413vi, 1.875rem);
    --space-m-l: clamp(1.5rem, 1.1739rem + 1.6304vi, 2.5rem);
    --space-l-xl: clamp(2rem, 1.4348rem + 2.8261vi, 3.75rem);
    --space-xl-2xl: clamp(3rem, 2.3478rem + 3.2609vi, 5rem);
    --space-2xl-3xl: clamp(4rem, 2.8696rem + 5.6522vi, 7.5rem);

    /* Custom pairs */
    --space-s-l: clamp(1rem, 0.5rem + 2.5vi, 2.5rem);

    /* === COLOR PALETTE === */
    /* Primary colors - Cyber blue gradient */
    --color-primary-50: #e6f9ff;
    --color-primary-100: #b3edff;
    --color-primary-200: #80e1ff;
    --color-primary-300: #4dd5ff;
    --color-primary-400: #1ac9ff;
    --color-primary-500: #00d4ff;
    --color-primary-600: #00a8cc;
    --color-primary-700: #007c99;
    --color-primary-800: #005066;
    --color-primary-900: #002433;

    /* Secondary colors - Purple accent */
    --color-secondary-50: #f0e6ff;
    --color-secondary-100: #d4b3ff;
    --color-secondary-200: #b880ff;
    --color-secondary-300: #9c4dff;
    --color-secondary-400: #818cf8;
    --color-secondary-500: #7c3aed;
    --color-secondary-600: #6d28d9;
    --color-secondary-700: #5b21b6;
    --color-secondary-800: #4c1d95;
    --color-secondary-900: #3b1775;

    /* Neutral colors - Slate scale */
    --color-neutral-0: #ffffff;
    --color-neutral-50: #f8fafc;
    --color-neutral-100: #f1f5f9;
    --color-neutral-200: #e2e8f0;
    --color-neutral-300: #cbd5e1;
    --color-neutral-400: #94a3b8;
    --color-neutral-500: #64748b;
    --color-neutral-600: #475569;
    --color-neutral-700: #334155;
    --color-neutral-800: #1e293b;
    --color-neutral-900: #0f172a;
    --color-neutral-950: #020617;

    /* Semantic colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;

    /* === THEME COLORS === */
    --color-bg-primary: var(--color-neutral-950);
    --color-bg-secondary: var(--color-neutral-900);
    --color-bg-tertiary: var(--color-neutral-800);
    --color-bg-elevated: rgba(30, 41, 59, 0.8);

    --color-text-primary: var(--color-neutral-50);
    --color-text-secondary: var(--color-neutral-300);
    --color-text-tertiary: var(--color-neutral-400);
    --color-text-muted: var(--color-neutral-500);

    --color-border-primary: var(--color-neutral-700);
    --color-border-secondary: var(--color-neutral-800);
    --color-border-accent: var(--color-primary-500);

    /* === GRADIENTS === */
    --gradient-primary: linear-gradient(
        135deg,
        var(--color-primary-500) 0%,
        var(--color-secondary-400) 100%
    );
    --gradient-primary-hover: linear-gradient(
        135deg,
        var(--color-primary-400) 0%,
        var(--color-secondary-300) 100%
    );
    --gradient-text: linear-gradient(
        135deg,
        var(--color-primary-400) 0%,
        var(--color-secondary-400) 100%
    );
    --gradient-glow: radial-gradient(
        ellipse at center,
        var(--color-primary-500) 0%,
        transparent 70%
    );
    --gradient-card: linear-gradient(
        180deg,
        rgba(30, 41, 59, 0.5) 0%,
        rgba(15, 23, 42, 0.8) 100%
    );

    /* === SHADOWS === */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md:
        0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg:
        0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl:
        0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.15);
    --shadow-glow-lg: 0 0 80px rgba(0, 212, 255, 0.2);

    /* === TYPOGRAPHY === */
    --font-sans:
        "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
        Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono:
        "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo,
        Consolas, monospace;

    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;

    --line-height-tight: 1.1;
    --line-height-snug: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 2;

    --letter-spacing-tight: -0.025em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.025em;
    --letter-spacing-wider: 0.05em;
    --letter-spacing-widest: 0.1em;

    /* === BORDERS & RADIUS === */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    --border-width-thin: 1px;
    --border-width-medium: 2px;
    --border-width-thick: 4px;

    /* === TRANSITIONS === */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    --transition-slower: 500ms ease;

    --ease-in-out-quad: cubic-bezier(0.45, 0, 0.55, 1);
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);

    /* === LAYOUT === */
    --container-max-width: 75rem;
    --container-padding: var(--space-m);

    /* === Z-INDEX SCALE === */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
}

/* ============================================
   CSS RESET & BASE STYLES
   ============================================ */

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    text-size-adjust: 100%;
    -webkit-text-size-adjust: 100%;
    overflow-x: hidden;
}

html,
body {
    max-width: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: var(--step-0);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

/* Remove default list styles */
ul,
ol {
    list-style: none;
}

/* Anchor reset */
a {
    color: inherit;
    text-decoration: none;
}

/* Button reset */
button {
    font: inherit;
    color: inherit;
    background: none;
    border: none;
    cursor: pointer;
}

/* Image reset */
img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
    height: auto;
}

/* Form reset */
input,
textarea,
select {
    font: inherit;
    color: inherit;
}

/* Remove input autofill background */
input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus,
textarea:-webkit-autofill,
textarea:-webkit-autofill:hover,
textarea:-webkit-autofill:focus,
select:-webkit-autofill,
select:-webkit-autofill:hover,
select:-webkit-autofill:focus {
    -webkit-text-fill-color: var(--color-text-primary);
    -webkit-box-shadow: 0 0 0px 1000px var(--color-bg-secondary) inset;
    transition: background-color 5000s ease-in-out 0s;
}

/* ============================================
   LAYOUT UTILITIES
   ============================================ */

.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin-inline: auto;
    padding-inline: var(--container-padding);
}

.section {
    position: relative;
    padding-block: var(--space-2xl-3xl);
}

/* Section blending - overlap technique with mask-image gradient */
/* Using fixed 3rem value for mask (matches --space-xl min) for browser compatibility */
.section--blend {
    position: relative;
    margin-top: -3rem;
    padding-top: calc(var(--space-2xl-3xl) + 3rem);
    -webkit-mask-image: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 0,
        rgba(0, 0, 0, 1) 3rem
    );
    mask-image: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 0,
        rgba(0, 0, 0, 1) 3rem
    );
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
}

h1 {
    font-size: var(--step-5);
}

h2 {
    font-size: var(--step-4);
}

h3 {
    font-size: var(--step-3);
}

h4 {
    font-size: var(--step-2);
}

h5 {
    font-size: var(--step-1);
}

h6 {
    font-size: var(--step-0);
}

p {
    max-width: 65ch;
}

strong {
    font-weight: var(--font-weight-semibold);
}

.text--gradient {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xs);
    font-weight: var(--font-weight-semibold);
    text-align: center;
    white-space: nowrap;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn:focus-visible {
    outline: var(--border-width-medium) solid var(--color-primary-500);
    outline-offset: var(--border-width-medium);
}

/* Button sizes */
.btn--sm {
    padding: var(--space-2xs) var(--space-s);
    font-size: var(--step--1);
}

.btn--md {
    padding: var(--space-xs) var(--space-m);
    font-size: var(--step-0);
}

.btn--lg {
    padding: var(--space-s) var(--space-l);
    font-size: var(--step-0);
}

.btn--full {
    width: 100%;
}

/* Button variants */
.btn--primary {
    background: var(--gradient-primary);
    color: var(--color-neutral-950);
    border: none;
    box-shadow:
        var(--shadow-md),
        0 0 20px rgba(0, 212, 255, 0.2);
}

.btn--primary:hover {
    background: var(--gradient-primary-hover);
    box-shadow:
        var(--shadow-lg),
        0 0 30px rgba(0, 212, 255, 0.3);
    transform: translateY(-2px);
}

.btn--primary:active {
    transform: translateY(0);
}

.btn--outline {
    background: transparent;
    color: var(--color-text-primary);
    border: var(--border-width-medium) solid var(--color-border-primary);
}

.btn--outline:hover {
    border-color: var(--color-primary-500);
    color: var(--color-primary-400);
    background: rgba(0, 212, 255, 0.05);
}

.btn--ghost {
    background: transparent;
    color: var(--color-text-secondary);
}

.btn--ghost:hover {
    color: var(--color-text-primary);
    background: rgba(255, 255, 255, 0.05);
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    padding-block: var(--space-s);
    background: rgba(2, 6, 23, 0.8);
    backdrop-filter: blur(var(--space-s));
    -webkit-backdrop-filter: blur(var(--space-s));
    border-bottom: var(--border-width-thin) solid transparent;
    transition: all var(--transition-base);
}

.header.scrolled {
    padding-block: var(--space-xs);
    background: rgba(2, 6, 23, 0.95);
    border-bottom-color: var(--color-border-secondary);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-m);
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-weight: var(--font-weight-bold);
    font-size: var(--step-1);
    transition: opacity var(--transition-fast);
}

.nav__logo:hover {
    opacity: 0.8;
}

.logo__icon {
    width: var(--space-l);
    height: var(--space-l);
}

.logo__text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav__menu {
    display: flex;
    align-items: center;
}

.nav__list {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.nav__link {
    padding: var(--space-2xs) var(--space-s);
    font-size: var(--step--1);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav__link:hover,
.nav__link.active {
    color: var(--color-text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav__link.active {
    color: var(--color-primary-400);
}

.nav__actions {
    display: flex;
    align-items: center;
    gap: var(--space-s);
}

.nav__toggle,
.nav__close {
    display: none;
    padding: var(--space-2xs);
    color: var(--color-text-primary);
}

/* Mobile navigation */
@media (max-width: 768px) {
    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: min(80%, var(--space-3xl));
        height: 100vh;
        flex-direction: column;
        align-items: flex-start;
        padding: var(--space-2xl) var(--space-l);
        background: var(--color-bg-secondary);
        border-left: var(--border-width-thin) solid
            var(--color-border-secondary);
        transition: right var(--transition-slow) var(--ease-out-expo);
    }

    .nav__menu.show-menu {
        right: 0;
    }

    .nav__list {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2xs);
        width: 100%;
    }

    .nav__link {
        width: 100%;
        padding: var(--space-s);
        font-size: var(--step-0);
    }

    .nav__close {
        display: block;
        position: absolute;
        top: var(--space-m);
        right: var(--space-m);
    }

    .nav__toggle {
        display: block;
    }

    .nav__actions .btn {
        display: none;
    }
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    padding-top: calc(var(--space-3xl) + var(--space-2xl));
    padding-bottom: var(--space-3xl);
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    inset: 0;
    z-index: -1;
    overflow: hidden;
}

.hero__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: var(--space-xl) var(--space-xl);
    mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(
        ellipse at center,
        black 20%,
        transparent 70%
    );
}

.hero__glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
}

.hero__glow--1 {
    top: 10%;
    left: 20%;
    width: 40vw;
    height: 40vw;
    background: var(--color-primary-600);
}

.hero__glow--2 {
    bottom: 20%;
    right: 10%;
    width: 30vw;
    height: 30vw;
    background: var(--color-secondary-600);
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    align-items: center;
}

@media (min-width: 1024px) {
    .hero__container {
        grid-template-columns: 1.2fr 1fr;
        gap: var(--space-2xl);
    }
}

.hero__content {
    text-align: center;
}

@media (min-width: 1024px) {
    .hero__content {
        text-align: left;
    }
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2xs);
    padding: var(--space-2xs) var(--space-s);
    background: rgba(0, 212, 255, 0.1);
    border: var(--border-width-thin) solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--step--1);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary-400);
    margin-bottom: var(--space-m);
}

.badge__icon {
    font-size: var(--step-0);
}

.hero__title {
    font-size: var(--step-4);
    font-weight: var(--font-weight-extrabold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--space-s);
}

@media (min-width: 768px) {
    .hero__title {
        font-size: var(--step-5);
    }
}

.hero__subtitle {
    font-size: var(--step-1);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-s);
}

.hero__description {
    font-size: var(--step-0);
    color: var(--color-text-tertiary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-l);
    max-width: 55ch;
}

@media (min-width: 1024px) {
    .hero__description {
        margin-inline: 0;
    }
}

.hero__buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-s);
    justify-content: center;
}

@media (min-width: 1024px) {
    .hero__buttons {
        justify-content: flex-start;
    }
}

/* Hero visual - Shield animation */
.hero__visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero__shield {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.shield__outer {
    position: relative;
    width: clamp(var(--space-3xl), 30vw, 20rem);
    height: clamp(var(--space-3xl), 30vw, 20rem);
    border-radius: 50%;
    background: var(--gradient-card);
    border: var(--border-width-thin) solid var(--color-border-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    animation: float 6s ease-in-out infinite;
}

.shield__inner {
    width: 80%;
    height: 80%;
    border-radius: 50%;
    background: var(--color-bg-primary);
    border: var(--border-width-thin) solid var(--color-border-secondary);
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: var(--shadow-glow-lg);
}

.shield__icon {
    width: 50%;
    height: 50%;
    color: var(--color-primary-400);
}

.shield__icon svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.5));
}

.shield__particles {
    position: absolute;
    inset: -20px;
    pointer-events: none;
}

.shield__particles span {
    position: absolute;
    width: var(--space-3xs);
    height: var(--space-3xs);
    background: var(--color-primary-400);
    border-radius: 50%;
    animation: particle 4s linear infinite;
}

.shield__particles span:nth-child(1) {
    top: 10%;
    left: 20%;
    animation-delay: 0s;
}
.shield__particles span:nth-child(2) {
    top: 30%;
    right: 10%;
    animation-delay: 0.5s;
}
.shield__particles span:nth-child(3) {
    bottom: 20%;
    left: 10%;
    animation-delay: 1s;
}
.shield__particles span:nth-child(4) {
    top: 50%;
    left: 5%;
    animation-delay: 1.5s;
}
.shield__particles span:nth-child(5) {
    bottom: 10%;
    right: 20%;
    animation-delay: 2s;
}
.shield__particles span:nth-child(6) {
    top: 15%;
    right: 25%;
    animation-delay: 2.5s;
}

@keyframes float {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes particle {
    0% {
        opacity: 0;
        transform: scale(0);
    }
    20% {
        opacity: 1;
        transform: scale(1);
    }
    80% {
        opacity: 1;
        transform: scale(1);
    }
    100% {
        opacity: 0;
        transform: scale(0);
    }
}

/* Scroll indicator */
.hero__scroll {
    position: absolute;
    bottom: var(--space-l);
    left: 50%;
    transform: translateX(-50%);
    padding-bottom: env(safe-area-inset-bottom, 0px);
}

@media (max-height: 500px) {
    .hero__scroll {
        display: none;
    }
}

.scroll__indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2xs);
    color: var(--color-text-muted);
    font-size: var(--step--1);
    transition: color var(--transition-fast);
}

.scroll__indicator:hover {
    color: var(--color-text-secondary);
}

.scroll__icon {
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(8px);
    }
}

/* ============================================
   SECTION HEADERS
   ============================================ */

.section__header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section__tag {
    display: inline-block;
    padding: var(--space-2xs) var(--space-s);
    background: rgba(0, 212, 255, 0.1);
    border: var(--border-width-thin) solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--step--1);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary-400);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wider);
    margin-bottom: var(--space-s);
}

.section__title {
    font-size: var(--step-4);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-s);
}

.section__description {
    font-size: var(--step-0);
    color: var(--color-text-tertiary);
    max-width: 60ch;
    margin-inline: auto;
}

/* ============================================
   SERVICES SECTION
   ============================================ */

.services {
    background: var(--color-bg-secondary);
    position: relative;
    margin-top: -3rem;
    padding-top: calc(var(--space-2xl-3xl) + 3rem);
    -webkit-mask-image: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 0,
        rgba(0, 0, 0, 1) 3rem
    );
    mask-image: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 0,
        rgba(0, 0, 0, 1) 3rem
    );
}

.services__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-m);
}

@media (min-width: 768px) {
    .services__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .services__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.service-card {
    position: relative;
    padding: var(--space-l);
    background: var(--gradient-card);
    border: var(--border-width-thin) solid var(--color-border-secondary);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.service-card:hover {
    border-color: var(--color-border-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.service-card--featured {
    border: var(--border-width-medium) solid transparent;
    background:
        linear-gradient(var(--color-bg-secondary), var(--color-bg-secondary))
            padding-box,
        var(--gradient-primary) border-box;
}

.service-card--featured:hover {
    background:
        linear-gradient(var(--color-bg-tertiary), var(--color-bg-secondary))
            padding-box,
        var(--gradient-primary) border-box;
}

.service-card__badge {
    position: absolute;
    top: var(--space-s);
    right: var(--space-s);
    padding: var(--space-3xs) var(--space-xs);
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    font-size: var(--step--2);
    font-weight: var(--font-weight-semibold);
    color: var(--color-neutral-950);
}

.service-card__icon {
    width: var(--space-xl);
    height: var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border: var(--border-width-thin) solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-lg);
    color: var(--color-primary-400);
    margin-bottom: var(--space-m);
}

.service-card__icon svg {
    width: var(--space-m);
    height: var(--space-m);
}

.service-card__title {
    font-size: var(--step-1);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-2xs);
}

.service-card__price {
    font-size: var(--step--1);
    color: var(--color-primary-400);
    margin-bottom: var(--space-s);
}

.service-card__price strong {
    font-size: var(--step-1);
}

.service-card__description {
    font-size: var(--step--1);
    color: var(--color-text-tertiary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-m);
}

.service-card__features {
    margin-bottom: var(--space-m);
}

.service-card__features li {
    position: relative;
    padding-left: var(--space-m);
    font-size: var(--step--1);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2xs);
}

.service-card__features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: var(--font-weight-bold);
}

.service-card__link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2xs);
    font-size: var(--step--1);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary-400);
    transition: all var(--transition-fast);
}

.service-card__link:hover {
    color: var(--color-primary-300);
    gap: var(--space-xs);
}

/* ============================================
   ABOUT SECTION
   ============================================ */

.about {
    background: var(--color-bg-primary);
    position: relative;
    margin-top: -3rem;
    padding-top: calc(var(--space-2xl-3xl) + 3rem);
    -webkit-mask-image: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 0,
        rgba(0, 0, 0, 1) 3rem
    );
    mask-image: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 0,
        rgba(0, 0, 0, 1) 3rem
    );
}

.about__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    align-items: center;
}

@media (min-width: 1024px) {
    .about__grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-2xl);
    }
}

.about__content .section__tag {
    display: block;
    width: fit-content;
    margin-inline: auto;
}

.about__content .section__title {
    text-align: center;
    margin-bottom: var(--space-m);
}

@media (min-width: 1024px) {
    .about__content .section__title {
        text-align: left;
    }
}

.about__text {
    color: var(--color-text-tertiary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-m);
    text-align: center;
}

@media (min-width: 1024px) {
    .about__text {
        text-align: left;
    }
}

.about__features {
    display: flex;
    flex-direction: column;
    gap: var(--space-m);
    margin-bottom: var(--space-l);
}

.about__feature {
    display: flex;
    gap: var(--space-s);
}

.feature__icon {
    flex-shrink: 0;
    width: var(--space-l);
    height: var(--space-l);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(16, 185, 129, 0.1);
    border: var(--border-width-thin) solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-md);
    color: var(--color-success);
}

.feature__icon svg {
    width: var(--space-s);
    height: var(--space-s);
}

.feature__content h4 {
    font-size: var(--step-0);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-3xs);
}

.feature__content p {
    font-size: var(--step--1);
    color: var(--color-text-tertiary);
}

/* About visual */
.about__visual {
    position: relative;
}

.about__image {
    position: relative;
}

.image__frame {
    background: var(--gradient-card);
    border: var(--border-width-thin) solid var(--color-border-secondary);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.image__content {
    padding: var(--space-m);
}

/* Code block styling */
.code-block {
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    font-family: var(--font-mono);
}

.code-block__header {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
    padding: var(--space-s) var(--space-m);
    background: var(--color-bg-tertiary);
    border-bottom: var(--border-width-thin) solid var(--color-border-secondary);
}

.dot {
    width: var(--space-2xs);
    height: var(--space-2xs);
    border-radius: 50%;
}

.dot--red {
    background: #ff5f57;
}
.dot--yellow {
    background: #febc2e;
}
.dot--green {
    background: #28c840;
}

.code-block__title {
    margin-left: var(--space-s);
    font-size: var(--step--2);
    color: var(--color-text-muted);
}

.code-block__content {
    padding: var(--space-m);
    overflow-x: auto;
}

.code-block__content pre {
    margin: 0;
}

.code-block__content code {
    font-size: var(--step--2);
    line-height: var(--line-height-relaxed);
}

.code--keyword {
    color: var(--color-primary-400);
}
.code--variable {
    color: var(--color-secondary-400);
}
.code--string {
    color: var(--color-success);
}
.code--property {
    color: var(--color-warning);
}
.code--boolean {
    color: var(--color-success);
    font-weight: var(--font-weight-semibold);
}

/* About badges */
.about__badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-s);
    margin-top: var(--space-m);
    justify-content: center;
}

@media (min-width: 1024px) {
    .about__badges {
        justify-content: flex-start;
    }
}

.badge-item {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
    padding: var(--space-xs) var(--space-s);
    background: var(--gradient-card);
    border: var(--border-width-thin) solid var(--color-border-secondary);
    border-radius: var(--radius-full);
    font-size: var(--step--1);
    font-weight: var(--font-weight-medium);
}

.badge-item__icon {
    font-size: var(--step-0);
}

/* ============================================
   EXPERTISE SECTION
   ============================================ */

.expertise {
    background: var(--color-bg-secondary);
    position: relative;
    margin-top: -3rem;
    padding-top: calc(var(--space-2xl-3xl) + 3rem);
    -webkit-mask-image: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 0,
        rgba(0, 0, 0, 1) 3rem
    );
    mask-image: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 0,
        rgba(0, 0, 0, 1) 3rem
    );
}

.expertise__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-m);
    margin-bottom: var(--space-xl);
}

@media (min-width: 640px) {
    .expertise__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .expertise__grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.expertise__category {
    padding: var(--space-l);
    background: var(--gradient-card);
    border: var(--border-width-thin) solid var(--color-border-secondary);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.expertise__category:hover {
    border-color: var(--color-border-primary);
}

.expertise__title {
    font-size: var(--step-0);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-m);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2xs);
}

.tech-tag {
    padding: var(--space-3xs) var(--space-xs);
    background: rgba(0, 212, 255, 0.1);
    border: var(--border-width-thin) solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-md);
    font-size: var(--step--2);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary-400);
    transition: all var(--transition-fast);
}

.tech-tag:hover {
    background: rgba(0, 212, 255, 0.2);
}

/* Process section */
.process {
    padding: var(--space-xl);
    background: var(--gradient-card);
    border: var(--border-width-thin) solid var(--color-border-secondary);
    border-radius: var(--radius-2xl);
}

.process__title {
    font-size: var(--step-2);
    font-weight: var(--font-weight-bold);
    text-align: center;
    margin-bottom: var(--space-l);
}

.process__steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-m);
}

@media (min-width: 768px) {
    .process__steps {
        grid-template-columns: repeat(3, 1fr);
    }
}

.process__step {
    text-align: center;
    padding: var(--space-m);
}

.step__number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: var(--space-xl);
    height: var(--space-xl);
    background: var(--gradient-primary);
    border-radius: 50%;
    font-size: var(--step-0);
    font-weight: var(--font-weight-bold);
    color: var(--color-neutral-950);
    margin-bottom: var(--space-s);
}

.step__title {
    font-size: var(--step-0);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-2xs);
}

.step__description {
    font-size: var(--step--1);
    color: var(--color-text-tertiary);
}

/* ============================================
   CTA SECTION
   ============================================ */

.cta {
    background: var(--color-bg-primary);
    position: relative;
    overflow: hidden;
    margin-top: -3rem;
    padding-top: calc(var(--space-2xl-3xl) + 3rem);
    -webkit-mask-image: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 0,
        rgba(0, 0, 0, 1) 3rem
    );
    mask-image: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 0,
        rgba(0, 0, 0, 1) 3rem
    );
}

.cta::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    background: var(--gradient-glow);
    opacity: 0.1;
    pointer-events: none;
}

.cta__content {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--space-xl);
    background: var(--gradient-card);
    border: var(--border-width-thin) solid var(--color-border-secondary);
    border-radius: var(--radius-2xl);
}

@media (min-width: 1024px) {
    .cta__content {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
        padding: var(--space-2xl);
    }
}

.cta__text {
    margin-bottom: var(--space-l);
}

@media (min-width: 1024px) {
    .cta__text {
        margin-bottom: 0;
        max-width: 60%;
    }
}

.cta__title {
    font-size: var(--step-3);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-s);
}

.cta__description {
    font-size: var(--step-0);
    color: var(--color-text-tertiary);
}

.cta__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-s);
    justify-content: center;
}

@media (min-width: 1024px) {
    .cta__actions {
        justify-content: flex-end;
    }
}

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact {
    background: var(--color-bg-secondary);
    position: relative;
    margin-top: -3rem;
    padding-top: calc(var(--space-2xl-3xl) + 3rem);
    -webkit-mask-image: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 0,
        rgba(0, 0, 0, 1) 3rem
    );
    mask-image: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 0,
        rgba(0, 0, 0, 1) 3rem
    );
}

.contact__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

@media (min-width: 1024px) {
    .contact__grid {
        grid-template-columns: 1fr 1.2fr;
        gap: var(--space-2xl);
    }
}

.contact__info .section__tag {
    display: block;
    width: fit-content;
    margin-inline: auto;
}

.contact__info .section__title {
    text-align: left;
    margin-bottom: var(--space-m);
}

.contact__description {
    color: var(--color-text-tertiary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-l);
}

.contact__methods {
    display: flex;
    flex-direction: column;
    gap: var(--space-m);
}

.contact__method {
    display: flex;
    align-items: center;
    gap: var(--space-s);
    padding: var(--space-m);
    background: var(--gradient-card);
    border: var(--border-width-thin) solid var(--color-border-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.contact__method:hover {
    border-color: var(--color-primary-500);
    transform: translateX(4px);
}

.method__icon {
    flex-shrink: 0;
    width: var(--space-xl);
    height: var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border: var(--border-width-thin) solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-md);
    color: var(--color-primary-400);
}

.method__icon svg {
    width: var(--space-m);
    height: var(--space-m);
}

.method__label {
    display: block;
    font-size: var(--step--2);
    color: var(--color-text-muted);
    margin-bottom: var(--space-3xs);
}

.method__value {
    font-size: var(--step-0);
    font-weight: var(--font-weight-medium);
}

/* Contact form */
.contact__form-container {
    padding: var(--space-l);
    background: var(--gradient-card);
    border: var(--border-width-thin) solid var(--color-border-secondary);
    border-radius: var(--radius-xl);
}

.contact__form {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-m);
}

@media (min-width: 640px) {
    .contact__form {
        grid-template-columns: repeat(2, 1fr);
    }
}

.form__group--full {
    grid-column: 1 / -1;
}

.form__label {
    display: block;
    font-size: var(--step--1);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--space-2xs);
}

.form__input {
    width: 100%;
    padding: var(--space-s);
    background: var(--color-bg-primary);
    border: var(--border-width-thin) solid var(--color-border-secondary);
    border-radius: var(--radius-md);
    font-size: var(--step-0);
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.form__input::placeholder {
    color: var(--color-text-muted);
}

.form__input:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form__select {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1.25em;
    padding-right: 2.5rem;
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
}

.form__select::-ms-expand {
    display: none;
}

.form__select option {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
}

.form__textarea {
    resize: vertical;
    min-height: var(--space-3xl);
}

.form__note,
.form__response-time {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
    font-size: var(--step--2);
    color: var(--color-text-muted);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    padding-block: var(--space-xl);
    background: var(--color-bg-primary);
    border-top: var(--border-width-thin) solid var(--color-border-secondary);
}

.footer__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

@media (min-width: 640px) {
    .footer__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer__grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

.footer__logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-weight: var(--font-weight-bold);
    font-size: var(--step-1);
    margin-bottom: var(--space-m);
}

.footer__tagline {
    font-size: var(--step--1);
    color: var(--color-text-tertiary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-m);
}

.footer__certifications {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2xs);
}

.cert-badge {
    padding: var(--space-3xs) var(--space-xs);
    background: rgba(0, 212, 255, 0.1);
    border: var(--border-width-thin) solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-md);
    font-size: var(--step--2);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary-400);
}

.footer__title {
    font-size: var(--step-0);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-m);
}

.footer__list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xs);
}

.footer__list a {
    font-size: var(--step--1);
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

.footer__list a:hover {
    color: var(--color-primary-400);
}

.footer__bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-s);
    padding-top: var(--space-l);
    border-top: var(--border-width-thin) solid var(--color-border-secondary);
    text-align: center;
}

@media (min-width: 768px) {
    .footer__bottom {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.footer__copyright {
    font-size: var(--step--1);
    color: var(--color-text-muted);
}

.footer__legal {
    display: flex;
    gap: var(--space-m);
}

.footer__legal a {
    font-size: var(--step--1);
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

.footer__legal a:hover {
    color: var(--color-primary-400);
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */

.back-to-top {
    position: fixed;
    bottom: var(--space-l);
    right: var(--space-l);
    z-index: var(--z-fixed);
    width: var(--space-xl);
    height: var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 50%;
    color: var(--color-neutral-950);
    box-shadow:
        var(--shadow-lg),
        0 0 20px rgba(0, 212, 255, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow:
        var(--shadow-xl),
        0 0 30px rgba(0, 212, 255, 0.4);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus visible for accessibility */
:focus-visible {
    outline: var(--border-width-medium) solid var(--color-primary-500);
    outline-offset: var(--border-width-medium);
}

/* Selection styling */
::selection {
    background: rgba(0, 212, 255, 0.3);
    color: var(--color-text-primary);
}

/* Smooth scrolling for reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}