/* ==========================================================================
   DATAFORGE - ANALYTICS PLATFORM TEMPLATE
   Premium CSS with Design Tokens System
   ========================================================================== */

/* ==========================================================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ========================================================================== */

:root {
    /* COLORS - Emerald/Green Analytics Theme */
    --color-primary-50: #ecfdf5;
    --color-primary-100: #d1fae5;
    --color-primary-200: #a7f3d0;
    --color-primary-300: #6ee7b7;
    --color-primary-400: #34d399;
    --color-primary-500: #10b981;
    --color-primary-600: #059669;
    --color-primary-700: #047857;
    --color-primary-800: #065f46;
    --color-primary-900: #064e3b;

    --color-accent-blue: #3b82f6;
    --color-accent-purple: #8b5cf6;
    --color-accent-orange: #f97316;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;

    /* NEUTRALS */
    --color-white: #ffffff;
    --color-neutral-50: #fafafa;
    --color-neutral-100: #f5f5f5;
    --color-neutral-200: #e5e5e5;
    --color-neutral-300: #d4d4d4;
    --color-neutral-400: #a3a3a3;
    --color-neutral-500: #737373;
    --color-neutral-600: #525252;
    --color-neutral-700: #404040;
    --color-neutral-800: #262626;
    --color-neutral-900: #171717;
    --color-black: #0a0a0a;

    /* TYPOGRAPHY SCALE */
    --text-hero: clamp(3rem, 8vw, 6rem);        /* 48-96px */
    --text-display: clamp(2.5rem, 5vw, 4rem);   /* 40-64px */
    --text-h1: clamp(2rem, 4vw, 3rem);          /* 32-48px */
    --text-h2: clamp(1.5rem, 3vw, 2.25rem);     /* 24-36px */
    --text-h3: clamp(1.25rem, 2vw, 1.5rem);     /* 20-24px */
    --text-h4: 1.125rem;                         /* 18px */
    --text-body: 1rem;                           /* 16px */
    --text-small: 0.875rem;                      /* 14px */
    --text-xs: 0.75rem;                          /* 12px */

    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-mono: 'SF Mono', Consolas, 'Monaco', 'Courier New', monospace;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* SPACING SCALE (8px base unit) */
    --space-1: 0.25rem;   /* 4px */
    --space-2: 0.5rem;    /* 8px */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-5: 1.25rem;   /* 20px */
    --space-6: 1.5rem;    /* 24px */
    --space-8: 2rem;      /* 32px */
    --space-10: 2.5rem;   /* 40px */
    --space-12: 3rem;     /* 48px */
    --space-16: 4rem;     /* 64px */
    --space-20: 5rem;     /* 80px */
    --space-24: 6rem;     /* 96px */
    --space-32: 8rem;     /* 128px */

    /* BORDER RADIUS */
    --radius-sm: 0.375rem;   /* 6px */
    --radius-md: 0.5rem;     /* 8px */
    --radius-lg: 0.75rem;    /* 12px */
    --radius-xl: 1rem;       /* 16px */
    --radius-2xl: 1.5rem;    /* 24px */
    --radius-full: 9999px;

    /* SHADOWS */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* GLOW EFFECTS */
    --glow-primary: 0 0 60px rgba(16, 185, 129, 0.3);
    --glow-primary-lg: 0 0 100px rgba(16, 185, 129, 0.4);
    --glow-blue: 0 0 60px rgba(59, 130, 246, 0.3);
    --glow-purple: 0 0 60px rgba(139, 92, 246, 0.3);

    /* TRANSITIONS */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.8s cubic-bezier(0.16, 1, 0.3, 1);

    /* Z-INDEX SCALE */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* DARK MODE OVERRIDES */
.dark {
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #171717;
    --color-bg-tertiary: #262626;
    --color-text-primary: #ffffff;
    --color-text-secondary: #d4d4d4;
    --color-text-tertiary: #a3a3a3;
    --color-border: #404040;

    color-scheme: dark;
}

/* ==========================================================================
   BASE STYLES
   ========================================================================== */

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-body);
    line-height: var(--line-height-normal);
    color: var(--color-neutral-900);
    background-color: var(--color-white);
    transition: background-color var(--transition-base), color var(--transition-base);
}

.dark body {
    color: var(--color-white);
    background-color: var(--color-black);
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    letter-spacing: -0.02em;
}

h1 {
    font-size: var(--text-h1);
}

h2 {
    font-size: var(--text-h2);
}

h3 {
    font-size: var(--text-h3);
}

h4 {
    font-size: var(--text-h4);
}

p {
    line-height: var(--line-height-relaxed);
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    padding: 0.125rem 0.375rem;
    background-color: var(--color-neutral-100);
    border-radius: var(--radius-sm);
}

.dark code {
    background-color: var(--color-neutral-800);
}

/* ==========================================================================
   SCROLL REVEAL ANIMATIONS
   ========================================================================== */

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-bounce),
                transform var(--transition-bounce);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: all var(--transition-bounce);
}

.reveal-left.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: all var(--transition-bounce);
}

.reveal-right.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: all var(--transition-bounce);
}

.reveal-scale.active {
    opacity: 1;
    transform: scale(1);
}

.reveal-blur {
    opacity: 0;
    filter: blur(10px);
    transform: translateY(20px);
    transition: all var(--transition-bounce);
}

.reveal-blur.active {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0);
}

/* Stagger delays */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* ==========================================================================
   HOVER ANIMATIONS
   ========================================================================== */

.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.hover-zoom {
    overflow: hidden;
}

.hover-zoom img {
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.hover-zoom:hover img {
    transform: scale(1.05);
}

.hover-shine {
    position: relative;
    overflow: hidden;
}

.hover-shine::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.hover-shine:hover::before {
    left: 100%;
}

/* ==========================================================================
   CONTINUOUS ANIMATIONS
   ========================================================================== */

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

.animate-float {
    animation: float 6s ease-in-out infinite;
}

@keyframes pulse-ring {
    0% { transform: scale(1); opacity: 0.8; }
    100% { transform: scale(1.5); opacity: 0; }
}

.pulse-ring {
    animation: pulse-ring 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.animate-gradient {
    background-size: 200% 200%;
    animation: gradient-shift 8s ease infinite;
}

@keyframes subtle-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

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

@keyframes spin-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.animate-spin-slow {
    animation: spin-slow 20s linear infinite;
}

@keyframes data-stream {
    0% { transform: translateY(0) scaleY(1); opacity: 0; }
    50% { opacity: 1; }
    100% { transform: translateY(-100px) scaleY(1.5); opacity: 0; }
}

.data-stream {
    animation: data-stream 2s ease-in-out infinite;
}

/* ==========================================================================
   DECORATIVE ELEMENTS
   ========================================================================== */

.bg-grid {
    background-image:
        linear-gradient(rgba(0,0,0,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,0,0,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}

.dark .bg-grid {
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
}

.bg-dots {
    background-image: radial-gradient(rgba(0,0,0,0.05) 1px, transparent 1px);
    background-size: 20px 20px;
}

.dark .bg-dots {
    background-image: radial-gradient(rgba(255,255,255,0.05) 1px, transparent 1px);
}

.gradient-mesh {
    background:
        radial-gradient(at 40% 20%, rgba(16, 185, 129, 0.3) 0px, transparent 50%),
        radial-gradient(at 80% 0%, rgba(59, 130, 246, 0.3) 0px, transparent 50%),
        radial-gradient(at 0% 50%, rgba(139, 92, 246, 0.3) 0px, transparent 50%);
}

.text-gradient {
    background: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glow {
    box-shadow: var(--glow-primary);
}

.glow-lg {
    box-shadow: var(--glow-primary-lg);
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */

nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-neutral-200);
    transition: all var(--transition-base);
}

.dark nav {
    background-color: rgba(10, 10, 10, 0.8);
    border-bottom-color: var(--color-neutral-800);
}

nav.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-link {
    color: var(--color-neutral-600);
    font-size: var(--text-small);
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-neutral-900);
}

.dark .nav-link {
    color: var(--color-neutral-400);
}

.dark .nav-link:hover {
    color: var(--color-white);
}

/* Mobile menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 400px;
    height: 100vh;
    background-color: var(--color-white);
    box-shadow: var(--shadow-2xl);
    transition: right var(--transition-base);
    overflow-y: auto;
    z-index: var(--z-modal);
}

.dark .mobile-menu {
    background-color: var(--color-black);
}

.mobile-menu.open {
    right: 0;
}

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
    z-index: var(--z-modal-backdrop);
}

.mobile-menu-overlay.open {
    opacity: 1;
    visibility: visible;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-small);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    outline: none;
}

.btn-primary {
    background-color: var(--color-primary-500);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-primary-600);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: var(--color-neutral-900);
    color: var(--color-white);
}

.btn-secondary:hover {
    background-color: var(--color-neutral-700);
}

.dark .btn-secondary {
    background-color: var(--color-white);
    color: var(--color-neutral-900);
}

.dark .btn-secondary:hover {
    background-color: var(--color-neutral-200);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-neutral-900);
    border: 2px solid var(--color-neutral-200);
}

.btn-outline:hover {
    background-color: var(--color-neutral-50);
    border-color: var(--color-neutral-300);
}

.dark .btn-outline {
    color: var(--color-white);
    border-color: var(--color-neutral-800);
}

.dark .btn-outline:hover {
    background-color: var(--color-neutral-900);
    border-color: var(--color-neutral-700);
}

/* ==========================================================================
   CARDS
   ========================================================================== */

.card {
    background-color: var(--color-white);
    border: 1px solid var(--color-neutral-200);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    transition: all var(--transition-base);
}

.dark .card {
    background-color: var(--color-neutral-900);
    border-color: var(--color-neutral-800);
}

.card-hover:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

/* Feature card */
.feature-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-neutral-200);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    transition: all var(--transition-base);
}

.dark .feature-card {
    background-color: var(--color-neutral-900);
    border-color: var(--color-neutral-800);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary-500);
}

/* Metric card */
.metric-card {
    background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
    color: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
}

/* Code block card */
.code-card {
    background-color: var(--color-neutral-900);
    color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    font-family: var(--font-mono);
    font-size: var(--text-small);
    overflow-x: auto;
}

.dark .code-card {
    background-color: var(--color-black);
    border: 1px solid var(--color-neutral-800);
}

/* ==========================================================================
   PRICING CARDS
   ========================================================================== */

.pricing-card {
    position: relative;
    background-color: var(--color-white);
    border: 2px solid var(--color-neutral-200);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    transition: all var(--transition-base);
}

.dark .pricing-card {
    background-color: var(--color-neutral-900);
    border-color: var(--color-neutral-800);
}

.pricing-card-popular {
    border-color: var(--color-primary-500);
    box-shadow: var(--glow-primary);
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.pricing-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-2) var(--space-4);
    background-color: var(--color-primary-500);
    color: var(--color-white);
    font-size: var(--text-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ==========================================================================
   FORMS
   ========================================================================== */

.form-group {
    margin-bottom: var(--space-6);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: var(--text-small);
    font-weight: var(--font-weight-medium);
    color: var(--color-neutral-700);
}

.dark .form-label {
    color: var(--color-neutral-300);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-body);
    font-family: var(--font-sans);
    color: var(--color-neutral-900);
    background-color: var(--color-white);
    border: 2px solid var(--color-neutral-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.dark .form-input,
.dark .form-textarea,
.dark .form-select {
    color: var(--color-white);
    background-color: var(--color-neutral-900);
    border-color: var(--color-neutral-800);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

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

footer {
    background-color: var(--color-neutral-50);
    border-top: 1px solid var(--color-neutral-200);
}

.dark footer {
    background-color: var(--color-neutral-900);
    border-top-color: var(--color-neutral-800);
}

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.section {
    padding: var(--space-20) 0;
}

@media (min-width: 768px) {
    .section {
        padding: var(--space-32) 0;
    }
}

.text-balance {
    text-wrap: balance;
}

.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    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-width: 0;
}

.sr-only:focus {
    position: static;
    width: auto;
    height: auto;
    padding: inherit;
    margin: inherit;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* ==========================================================================
   FOCUS STYLES (Accessibility)
   ========================================================================== */

:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

/* ==========================================================================
   SELECTION STYLES
   ========================================================================== */

::selection {
    background-color: var(--color-primary-500);
    color: var(--color-white);
}

::-moz-selection {
    background-color: var(--color-primary-500);
    color: var(--color-white);
}

/* ==========================================================================
   SCROLLBAR STYLES
   ========================================================================== */

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background-color: var(--color-neutral-100);
}

.dark ::-webkit-scrollbar-track {
    background-color: var(--color-neutral-900);
}

::-webkit-scrollbar-thumb {
    background-color: var(--color-neutral-400);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-neutral-500);
}

.dark ::-webkit-scrollbar-thumb {
    background-color: var(--color-neutral-700);
}

.dark ::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-neutral-600);
}

/* ==========================================================================
   REDUCED MOTION (REQUIRED FOR ACCESSIBILITY)
   ========================================================================== */

@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;
    }

    .reveal, .reveal-left, .reveal-right, .reveal-scale, .reveal-blur {
        opacity: 1;
        transform: none;
        filter: none;
    }
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */

@media print {
    nav,
    footer,
    .no-print {
        display: none;
    }

    body {
        color: #000;
        background: #fff;
    }

    a[href^="http"]::after {
        content: " (" attr(href) ")";
    }
}

/* ==========================================================================
   PERFORMANCE OPTIMIZATIONS
   ========================================================================== */

section {
    content-visibility: auto;
    contain-intrinsic-size: 0 500px;
}

.gpu-accelerated {
    transform: translateZ(0);
    will-change: transform, opacity;
}