/* ============================================================
   Namo Labs — Design System
   A modern, professional stylesheet
   ============================================================ */

/* -----------------------------------------------------------
   0. CUSTOM PROPERTIES (Design Tokens)
   ----------------------------------------------------------- */
:root {
    /* Color Palette */
    --color-primary:       #1a1f2e;
    --color-primary-light: #242a3a;
    --color-primary-mid:   #2e3548;
    --color-surface:       #1e2333;

    --color-accent:        #0ff4d4;
    --color-accent-dim:    #0cc4aa;
    --color-accent-glow:   rgba(15, 244, 212, 0.15);
    --color-accent-alt:    #7c5cfc;

    --color-white:   #ffffff;
    --color-gray-50: #f7f8fa;
    --color-gray-100:#eceef2;
    --color-gray-200:#d8dce5;
    --color-gray-400:#94a0b8;
    --color-gray-500:#6b7a94;
    --color-gray-600:#4a5568;
    --color-gray-700:#334155;
    --color-gray-800:#1e293b;

    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-error:   #ef4444;

    /* Gradients */
    --gradient-accent:  linear-gradient(135deg, #0ff4d4 0%, #7c5cfc 100%);
    --gradient-hero:    linear-gradient(160deg, #1a1f2e 0%, #242a3a 40%, #1e2333 100%);
    --gradient-cta:     linear-gradient(135deg, #1a1f2e 0%, #2e3548 50%, #1a1f2e 100%);
    --gradient-surface: linear-gradient(180deg, rgba(15, 244, 212, 0.04) 0%, transparent 100%);

    /* Typography */
    --font-family: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display:   clamp(2.75rem, 5vw + 1rem, 4.25rem);
    --font-h1:        clamp(2.25rem, 4vw + 0.5rem, 3.25rem);
    --font-h2:        clamp(1.75rem, 3vw + 0.25rem, 2.5rem);
    --font-h3:        1.375rem;
    --font-h4:        1.125rem;
    --font-body:      1rem;
    --font-body-lg:   1.125rem;
    --font-small:     0.875rem;
    --font-xs:        0.75rem;

    --leading-tight:   1.15;
    --leading-snug:    1.3;
    --leading-normal:  1.6;
    --leading-relaxed: 1.75;

    --tracking-tight:  -0.02em;
    --tracking-normal: 0;
    --tracking-wide:   0.05em;
    --tracking-wider:  0.1em;

    /* Spacing */
    --space-xs:  0.25rem;
    --space-sm:  0.5rem;
    --space-md:  1rem;
    --space-lg:  1.5rem;
    --space-xl:  2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;

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

    /* Shadows */
    --shadow-sm:    0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md:    0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg:    0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-xl:    0 16px 48px rgba(0, 0, 0, 0.16);
    --shadow-glow:  0 0 24px rgba(15, 244, 212, 0.2);
    --shadow-card:  0 2px 8px rgba(0, 0, 0, 0.06);

    /* Transitions */
    --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --duration-fast:   150ms;
    --duration-normal: 250ms;
    --duration-slow:   400ms;

    /* Z-Index Scale */
    --z-dropdown: 100;
    --z-sticky:   200;
    --z-overlay:  500;
    --z-modal:    1000;
    --z-toast:    1500;

    /* Layout */
    --container-max: 1200px;
    --header-height: 4.5rem;
}


/* -----------------------------------------------------------
   1. RESET & BASE
   ----------------------------------------------------------- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-body);
    line-height: var(--leading-normal);
    color: var(--color-primary);
    background: var(--color-white);
    overflow-x: hidden;
}

/* Lock body scroll when mobile menu is open */
body.menu-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
    height: 100%;
}

img, svg {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font: inherit;
    cursor: pointer;
    background: none;
    border: none;
    color: inherit;
}

ul, ol {
    list-style: none;
}

::selection {
    background: var(--color-accent);
    color: var(--color-primary);
}


/* -----------------------------------------------------------
   2. FOCUS STATES (Accessibility)
   ----------------------------------------------------------- */
:focus {
    outline: none;
}

:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
}

/* Focus rings on dark backgrounds */
.hero :focus-visible,
.cta-banner :focus-visible,
.footer :focus-visible {
    outline-color: var(--color-accent);
    outline-offset: 4px;
}

/* Button focus ring */
.btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
    box-shadow: var(--shadow-glow);
}


/* -----------------------------------------------------------
   3. LAYOUT
   ----------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section {
    padding: var(--space-4xl) 0;
}


/* -----------------------------------------------------------
   4. TYPOGRAPHY
   ----------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tight);
}


/* -----------------------------------------------------------
   5. KEYFRAME ANIMATIONS
   ----------------------------------------------------------- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(28px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes subtleFloat {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-4px); }
}

@keyframes gradientShift {
    0%   { background-position: 0% 50%; }
    50%  { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 0 0 rgba(15, 244, 212, 0.3); }
    50%      { box-shadow: 0 0 20px 4px rgba(15, 244, 212, 0.15); }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Animation class */
.fade-in-up {
    animation: fadeInUp 0.7s var(--ease-out) both;
}

/* Staggered delays for sibling elements */
.fade-in-up:nth-child(1) { animation-delay: 0ms; }
.fade-in-up:nth-child(2) { animation-delay: 120ms; }
.fade-in-up:nth-child(3) { animation-delay: 240ms; }
.fade-in-up:nth-child(4) { animation-delay: 360ms; }
.fade-in-up:nth-child(5) { animation-delay: 480ms; }

/* Delay utility classes */
.delay-1 { animation-delay: 100ms !important; }
.delay-2 { animation-delay: 200ms !important; }
.delay-3 { animation-delay: 300ms !important; }
.delay-4 { animation-delay: 400ms !important; }
.delay-5 { animation-delay: 500ms !important; }


/* -----------------------------------------------------------
   6. HEADER
   ----------------------------------------------------------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-modal);
    padding: 0;
    height: var(--header-height);
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid transparent;
    transition:
        background var(--duration-normal) var(--ease-out),
        border-color var(--duration-normal) var(--ease-out),
        box-shadow var(--duration-normal) var(--ease-out);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.97);
    border-bottom-color: var(--color-gray-100);
    box-shadow: 0 1px 12px rgba(0, 0, 0, 0.06);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    text-decoration: none;
    color: var(--color-primary);
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: var(--tracking-tight);
    transition: opacity var(--duration-fast) ease;
}

.logo:hover {
    opacity: 0.85;
}

.logo:hover .logo-icon {
    transform: scale(1.06) rotate(-3deg);
}

.logo-icon {
    width: 34px;
    height: 34px;
    color: var(--color-accent);
    transition: transform var(--duration-normal) var(--ease-spring);
    flex-shrink: 0;
}

.logo-icon svg {
    width: 100%;
    height: 100%;
}

/* Desktop Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 0.875rem;
    font-size: var(--font-small);
    font-weight: 500;
    color: var(--color-gray-500);
    border-radius: var(--radius-md);
    transition:
        color var(--duration-fast) ease,
        background var(--duration-fast) ease;
}

.nav-link:hover {
    color: var(--color-primary);
    background: var(--color-gray-50);
}

.nav-link.active {
    color: var(--color-accent-dim);
    font-weight: 600;
}


/* -----------------------------------------------------------
   7. MOBILE MENU
   ----------------------------------------------------------- */

/* Hamburger toggle button */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    padding: 0;
    cursor: pointer;
    z-index: calc(var(--z-modal) + 10);
    border-radius: var(--radius-md);
    transition: background var(--duration-fast) ease;
}

.mobile-menu-toggle:hover {
    background: var(--color-gray-50);
}

/* Hamburger lines */
.hamburger-line {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    transition:
        transform var(--duration-normal) var(--ease-out),
        opacity var(--duration-fast) ease,
        background var(--duration-fast) ease;
}

.hamburger-line + .hamburger-line {
    margin-top: 5px;
}

/* Hamburger to X transformation */
.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile overlay baseline */
.nav::before {
    content: '';
    display: none;
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 0;
        right: 0;
        width: min(85vw, 360px);
        height: 100vh;
        height: 100dvh;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        padding: calc(var(--header-height) + var(--space-xl)) var(--space-xl) var(--space-xl);
        background: var(--color-white);
        box-shadow: -8px 0 30px rgba(0, 0, 0, 0.1);
        transform: translateX(100%);
        transition: transform var(--duration-slow) var(--ease-out);
        z-index: var(--z-modal);
        overflow-y: auto;
    }

    /* Overlay backdrop */
    .nav::before {
        content: '';
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(26, 31, 46, 0.5);
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--duration-slow) var(--ease-out);
        z-index: -1;
    }

    .nav.active {
        transform: translateX(0);
    }

    .nav.active::before {
        opacity: 1;
        pointer-events: auto;
    }

    .nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .nav-link {
        padding: 0.875rem var(--space-md);
        font-size: var(--font-body);
        border-radius: var(--radius-lg);
    }

    .nav-link:hover {
        background: var(--color-gray-50);
    }

    .nav .btn {
        margin-top: var(--space-lg);
        width: 100%;
        justify-content: center;
    }
}


/* -----------------------------------------------------------
   8. BUTTONS
   ----------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.7rem 1.5rem;
    font-family: var(--font-family);
    font-size: var(--font-small);
    font-weight: 600;
    line-height: 1.4;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    transition:
        background var(--duration-fast) ease,
        color var(--duration-fast) ease,
        border-color var(--duration-fast) ease,
        transform var(--duration-fast) var(--ease-out),
        box-shadow var(--duration-fast) ease;
}

.btn:active {
    transform: scale(0.97);
}

/* Primary */
.btn-primary {
    background: var(--color-accent);
    color: var(--color-primary);
    border-color: var(--color-accent);
}

.btn-primary:hover {
    background: #00ffd5;
    border-color: #00ffd5;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(15, 244, 212, 0.3);
}

/* Outline */
.btn-outline {
    background: transparent;
    color: var(--color-gray-600);
    border-color: var(--color-gray-200);
}

.btn-outline:hover {
    color: var(--color-accent-dim);
    border-color: var(--color-accent);
    background: var(--color-accent-glow);
}

/* Large */
.btn-lg {
    padding: 0.9rem 2.25rem;
    font-size: var(--font-body);
    border-radius: var(--radius-lg);
}

/* Button variants on dark backgrounds */
.cta-banner .btn-primary,
.hero .btn-primary {
    background: var(--color-accent);
    color: var(--color-primary);
}

.cta-banner .btn-primary:hover {
    box-shadow: 0 6px 24px rgba(15, 244, 212, 0.35);
    transform: translateY(-2px);
}


/* -----------------------------------------------------------
   9. HERO SECTION
   ----------------------------------------------------------- */
.hero {
    position: relative;
    padding: calc(var(--header-height) + var(--space-5xl)) 0 var(--space-5xl);
    background: var(--gradient-hero);
    color: var(--color-white);
    overflow: hidden;
}

/* Subtle dot grid pattern */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.03) 1px, transparent 0);
    background-size: 40px 40px;
    pointer-events: none;
}

/* Accent glow orb — top right */
.hero::after {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(15, 244, 212, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 780px;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-accent);
    font-weight: 600;
    font-size: var(--font-xs);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
    margin-bottom: var(--space-lg);
}

.hero-eyebrow::before {
    content: '';
    display: inline-block;
    width: 24px;
    height: 1px;
    background: var(--color-accent);
}

.hero-title {
    font-size: var(--font-display);
    font-weight: 800;
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tight);
    margin-bottom: var(--space-lg);
}

/* Animated gradient text for accent spans */
.accent {
    background: var(--gradient-accent);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShift 4s ease infinite;
}

.hero-subtitle {
    font-size: var(--font-body-lg);
    color: var(--color-gray-400);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-2xl);
    max-width: 560px;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* Light outline variant in hero */
.hero .btn-outline {
    color: var(--color-gray-400);
    border-color: var(--color-primary-mid);
}

.hero .btn-outline:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
    background: rgba(15, 244, 212, 0.06);
}


/* -----------------------------------------------------------
   10. SECTION HEADERS
   ----------------------------------------------------------- */
.section-header {
    text-align: center;
    max-width: 660px;
    margin: 0 auto var(--space-3xl);
}

.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-accent-dim);
    font-weight: 600;
    font-size: var(--font-xs);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: var(--font-h2);
    font-weight: 700;
    line-height: var(--leading-snug);
    letter-spacing: var(--tracking-tight);
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: var(--font-body-lg);
    color: var(--color-gray-500);
    line-height: var(--leading-normal);
}


/* -----------------------------------------------------------
   11. GRID & CARDS
   ----------------------------------------------------------- */
.grid {
    display: grid;
    gap: var(--space-xl);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.card {
    position: relative;
    padding: var(--space-2xl);
    background: var(--color-white);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
    transition:
        transform var(--duration-normal) var(--ease-out),
        box-shadow var(--duration-normal) var(--ease-out),
        border-color var(--duration-normal) ease;
}

/* Gradient border on hover via pseudo-element */
.card::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1px;
    background: var(--gradient-accent);
    -webkit-mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--duration-normal) ease;
    pointer-events: none;
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.card:hover::before {
    opacity: 1;
}

/* Card icon placeholder */
.card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-lg);
    border-radius: var(--radius-lg);
    background: var(--gradient-surface);
    border: 1px solid var(--color-gray-100);
    color: var(--color-accent-dim);
    font-size: 1.25rem;
    transition: background var(--duration-normal) ease;
}

.card:hover .card-icon {
    background: var(--color-accent-glow);
    border-color: rgba(15, 244, 212, 0.2);
}

.card-title {
    font-size: var(--font-h3);
    font-weight: 700;
    line-height: var(--leading-snug);
    margin-bottom: 0.6rem;
}

.card-text {
    font-size: var(--font-small);
    color: var(--color-gray-500);
    line-height: var(--leading-normal);
}


/* -----------------------------------------------------------
   12. CTA BANNER
   ----------------------------------------------------------- */
.cta-banner {
    position: relative;
    padding: var(--space-5xl) 0;
    background: var(--gradient-cta);
    text-align: center;
    color: var(--color-white);
    overflow: hidden;
}

/* Decorative center glow */
.cta-banner::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 700px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(15, 244, 212, 0.07) 0%, transparent 70%);
    pointer-events: none;
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: var(--font-h2);
    font-weight: 700;
    line-height: var(--leading-snug);
    letter-spacing: var(--tracking-tight);
    margin-bottom: var(--space-md);
}

.cta-text {
    font-size: var(--font-body-lg);
    color: var(--color-gray-400);
    margin-bottom: var(--space-2xl);
    max-width: 540px;
    margin-left: auto;
    margin-right: auto;
    line-height: var(--leading-normal);
}


/* -----------------------------------------------------------
   13. FOOTER
   ----------------------------------------------------------- */
.footer {
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.75fr 1fr 1fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

/* Brand column */
.footer-brand span {
    font-size: var(--font-h4);
    font-weight: 700;
    letter-spacing: var(--tracking-tight);
}

.footer-desc {
    color: var(--color-gray-500);
    font-size: var(--font-small);
    line-height: var(--leading-relaxed);
    margin-top: var(--space-md);
    max-width: 320px;
}

/* Social links */
.footer-social {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    color: var(--color-gray-500);
    border: 1px solid var(--color-primary-mid);
    transition:
        color var(--duration-fast) ease,
        border-color var(--duration-fast) ease,
        background var(--duration-fast) ease;
}

.footer-social a:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
    background: rgba(15, 244, 212, 0.06);
}

/* Footer columns */
.footer-column {
    min-width: 0;
}

.footer-title {
    font-size: var(--font-small);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    color: var(--color-gray-400);
    margin-bottom: var(--space-lg);
}

.footer-links li + li {
    margin-top: 0.35rem;
}

.footer-links a {
    display: inline-block;
    padding: 0.3rem 0;
    color: var(--color-gray-500);
    font-size: var(--font-small);
    transition: color var(--duration-fast) ease;
}

.footer-links a:hover {
    color: var(--color-accent);
}

/* Footer bottom bar */
.footer-bottom {
    border-top: 1px solid var(--color-primary-mid);
    padding-top: var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
    color: var(--color-gray-500);
    font-size: var(--font-xs);
}


/* -----------------------------------------------------------
   14. RESPONSIVE BREAKPOINTS
   ----------------------------------------------------------- */

/* Tablet */
@media (max-width: 768px) {
    :root {
        --space-4xl: 4rem;
        --space-5xl: 5rem;
    }

    .hero {
        padding: calc(var(--header-height) + var(--space-3xl)) 0 var(--space-4xl);
    }

    .hero-title {
        font-size: clamp(2rem, 6vw, 2.75rem);
    }

    .section-header {
        margin-bottom: var(--space-2xl);
    }

    .grid-3 {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* Mobile */
@media (max-width: 640px) {
    :root {
        --space-4xl: 3rem;
        --space-5xl: 4rem;
    }

    .container {
        padding: 0 var(--space-md);
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        width: 100%;
        justify-content: center;
    }

    .card {
        padding: var(--space-xl);
    }

    .cta-title {
        font-size: var(--font-h1);
    }
}

/* Desktop enhancements */
@media (min-width: 1024px) {
    .grid-3 {
        gap: var(--space-2xl);
    }

    .card {
        padding: var(--space-2xl) var(--space-2xl);
    }

    .hero-content {
        max-width: 800px;
    }
}


/* -----------------------------------------------------------
   15. UTILITY CLASSES
   ----------------------------------------------------------- */

/* Display */
.hidden    { display: none !important; }
.block     { display: block; }
.flex      { display: flex; }
.inline-flex { display: inline-flex; }
.grid-util { display: grid; }

/* Flex */
.flex-col     { flex-direction: column; }
.flex-wrap    { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center  { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm  { gap: var(--space-sm); }
.gap-md  { gap: var(--space-md); }
.gap-lg  { gap: var(--space-lg); }
.gap-xl  { gap: var(--space-xl); }

/* Text */
.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-right  { text-align: right; }
.text-sm     { font-size: var(--font-small); }
.text-lg     { font-size: var(--font-body-lg); }
.text-accent { color: var(--color-accent); }
.text-muted  { color: var(--color-gray-500); }
.text-white  { color: var(--color-white); }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold   { font-weight: 700; }
.uppercase   { text-transform: uppercase; }
.tracking-wide { letter-spacing: var(--tracking-wide); }

/* Spacing */
.mt-sm  { margin-top: var(--space-sm); }
.mt-md  { margin-top: var(--space-md); }
.mt-lg  { margin-top: var(--space-lg); }
.mt-xl  { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.mb-sm  { margin-bottom: var(--space-sm); }
.mb-md  { margin-bottom: var(--space-md); }
.mb-lg  { margin-bottom: var(--space-lg); }
.mb-xl  { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }
.pt-lg  { padding-top: var(--space-lg); }
.pb-lg  { padding-bottom: var(--space-lg); }

/* Width */
.w-full { width: 100%; }
.max-w-sm  { max-width: 480px; }
.max-w-md  { max-width: 640px; }
.max-w-lg  { max-width: 800px; }
.mx-auto   { margin-left: auto; margin-right: auto; }

/* Visual */
.rounded-md   { border-radius: var(--radius-md); }
.rounded-lg   { border-radius: var(--radius-lg); }
.rounded-xl   { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.overflow-hidden { overflow: hidden; }

/* Screen reader only */
.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;
}

/* -----------------------------------------------------------
   16. ABOUT PAGE — Mission Blocks
   ----------------------------------------------------------- */
.mission-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    max-width: 900px;
    margin: 0 auto;
}

.mission-block {
    padding: var(--space-2xl);
    background: var(--color-white);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
}

.mission-block-title {
    font-size: var(--font-h3);
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--color-primary);
}

.mission-block-text {
    font-size: var(--font-body);
    color: var(--color-gray-500);
    line-height: var(--leading-relaxed);
}

@media (max-width: 640px) {
    .mission-grid {
        grid-template-columns: 1fr;
    }
}


/* -----------------------------------------------------------
   17. PROJECTS PAGE — Project Cards & Filters
   ----------------------------------------------------------- */
.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

@media (max-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }
}

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    justify-content: center;
    margin-bottom: var(--space-2xl);
}

.filter-tag {
    display: inline-flex;
    align-items: center;
    padding: 0.45rem 1rem;
    font-family: var(--font-family);
    font-size: var(--font-small);
    font-weight: 500;
    color: var(--color-gray-500);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition:
        color var(--duration-fast) ease,
        background var(--duration-fast) ease,
        border-color var(--duration-fast) ease;
}

.filter-tag:hover {
    color: var(--color-accent-dim);
    border-color: var(--color-accent);
    background: var(--color-accent-glow);
}

.filter-tag.active {
    color: var(--color-primary);
    background: var(--color-accent);
    border-color: var(--color-accent);
    font-weight: 600;
}

.project-card {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: var(--space-2xl);
    background: var(--color-white);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
    transition:
        transform var(--duration-normal) var(--ease-out),
        box-shadow var(--duration-normal) var(--ease-out),
        border-color var(--duration-normal) ease;
}

.project-card::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1px;
    background: var(--gradient-accent);
    -webkit-mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--duration-normal) ease;
    pointer-events: none;
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.project-card:hover::before {
    opacity: 1;
}

.project-card-header {
    margin-bottom: var(--space-md);
}

.project-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: var(--font-xs);
    font-weight: 600;
    color: var(--color-accent-dim);
    background: var(--color-accent-glow);
    border-radius: var(--radius-full);
    letter-spacing: var(--tracking-wide);
}

.project-card-title {
    font-size: var(--font-h3);
    font-weight: 700;
    line-height: var(--leading-snug);
    margin-bottom: 0.6rem;
    color: var(--color-primary);
}

.project-card-text {
    font-size: var(--font-small);
    color: var(--color-gray-500);
    line-height: var(--leading-normal);
    margin-bottom: var(--space-lg);
    flex-grow: 1;
}

.project-tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.project-tech {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    font-size: var(--font-xs);
    font-weight: 500;
    color: var(--color-gray-600);
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-sm);
}


/* -----------------------------------------------------------
   18. SERVICES PAGE — Service Cards
   ----------------------------------------------------------- */
.services-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xl);
    max-width: 900px;
    margin: 0 auto;
}

.service-card {
    display: flex;
    gap: var(--space-xl);
    padding: var(--space-2xl);
    background: var(--color-white);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
    transition:
        transform var(--duration-normal) var(--ease-out),
        box-shadow var(--duration-normal) var(--ease-out),
        border-color var(--duration-normal) ease;
}

.service-card::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1px;
    background: var(--gradient-accent);
    -webkit-mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--duration-normal) ease;
    pointer-events: none;
}

.service-card {
    position: relative;
}

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

.service-card:hover::before {
    opacity: 1;
}

.service-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    min-width: 56px;
    border-radius: var(--radius-lg);
    background: var(--gradient-surface);
    border: 1px solid var(--color-gray-100);
    color: var(--color-accent-dim);
    transition: background var(--duration-normal) ease;
}

.service-card:hover .service-icon {
    background: var(--color-accent-glow);
    border-color: rgba(15, 244, 212, 0.2);
}

.service-body {
    flex: 1;
    min-width: 0;
}

.service-title {
    font-size: var(--font-h3);
    font-weight: 700;
    line-height: var(--leading-snug);
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.service-desc {
    font-size: var(--font-body);
    color: var(--color-gray-500);
    line-height: var(--leading-normal);
    margin-bottom: var(--space-lg);
}

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

.service-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--font-small);
    color: var(--color-gray-600);
    line-height: var(--leading-normal);
}

.service-features li svg {
    flex-shrink: 0;
    color: var(--color-accent-dim);
}

@media (max-width: 640px) {
    .service-card {
        flex-direction: column;
    }

    .service-features {
        grid-template-columns: 1fr;
    }
}


/* -----------------------------------------------------------
   19. CONTACT PAGE — Form & Layout
   ----------------------------------------------------------- */
.contact-layout {
    display: grid;
    grid-template-columns: 1.25fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

@media (max-width: 768px) {
    .contact-layout {
        grid-template-columns: 1fr;
    }
}

.contact-form-title {
    font-size: var(--font-h2);
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.contact-form-subtitle {
    font-size: var(--font-body);
    color: var(--color-gray-500);
    margin-bottom: var(--space-2xl);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

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

.form-label {
    font-size: var(--font-small);
    font-weight: 600;
    color: var(--color-primary);
}

.form-required {
    color: var(--color-error);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-family);
    font-size: var(--font-body);
    color: var(--color-primary);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition:
        border-color var(--duration-fast) ease,
        box-shadow var(--duration-fast) ease;
}

.form-input::placeholder {
    color: var(--color-gray-400);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-input.error {
    border-color: var(--color-error);
}

.form-input.error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-textarea {
    resize: vertical;
    min-height: 140px;
}

.form-error {
    font-size: var(--font-xs);
    color: var(--color-error);
    margin-top: var(--space-xs);
}

/* Contact Sidebar */
.contact-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.contact-info-card {
    padding: var(--space-2xl);
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
}

.contact-info-title {
    font-size: var(--font-h4);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--color-primary);
}

.contact-info-text {
    font-size: var(--font-small);
    color: var(--color-gray-500);
    line-height: var(--leading-normal);
    margin-bottom: var(--space-xl);
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.contact-info-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    min-width: 40px;
    border-radius: var(--radius-md);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    color: var(--color-accent-dim);
}

.contact-info-label {
    display: block;
    font-size: var(--font-xs);
    font-weight: 600;
    color: var(--color-gray-400);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    margin-bottom: 0.15rem;
}

.contact-info-value {
    display: block;
    font-size: var(--font-body);
    color: var(--color-primary);
    font-weight: 500;
}

a.contact-info-value:hover {
    color: var(--color-accent-dim);
}

/* Contact Steps */
.contact-steps {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    counter-reset: none;
}

.contact-step {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.contact-step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    min-width: 28px;
    border-radius: var(--radius-full);
    background: var(--color-accent);
    color: var(--color-primary);
    font-size: var(--font-xs);
    font-weight: 700;
}

.contact-step strong {
    display: block;
    font-size: var(--font-small);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 0.15rem;
}

.contact-step p {
    font-size: var(--font-xs);
    color: var(--color-gray-500);
    line-height: var(--leading-normal);
}


/* 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;
    }
}