/**
 * @file global.css
 * @description Merged & Optimized Master Stylesheet for SDI Creative.
 * @version 3.1.0 (Merged)
 * Includes: Variable Extraction, BEM support, Performance Optimization, and Unified Layouts.
 */

/* ==========================================================================
   1. VARIABLES & RESETS (DESIGN TOKENS)
   ========================================================================== */
:root {
  /* Typography */
  --sdi-font-sans: "Inter", ui-sans-serif, system-ui, sans-serif;
  --sdi-font-body: var(--sdi-font-sans);
  --sdi-font-label: var(--sdi-font-sans);
  --sdi-font-headline: "Space Grotesk", sans-serif;
  --sdi-font-mono: "Space Mono", monospace;
  --sdi-font-size-tiny: 9px;
  --sdi-font-size-base: 1rem;

  /* Brand Colors */
  --sdi-color-primary: #00677f; /* File 2 Override */
  --sdi-color-secondary: #00677f;
  --sdi-color-tertiary: #144d5e;
  --sdi-color-accent: #00d1ff;
  --sdi-color-accent-dimmed: rgba(0, 209, 255, 0.2);
  
  /* Containers & Elements */
  --sdi-color-primary-container: #00677f;
  --sdi-color-secondary-container: #00ccf9;
  --sdi-color-secondary-fixed: #b7eaff;
  --sdi-color-secondary-fixed-dim: #4cd6ff;
  --sdi-color-on-primary: #ffffff;
  --sdi-color-on-secondary-container: #005266;

  /* Basic Colors */
  --sdi-color-white: #ffffff;
  --sdi-color-black: #000000;
  --sdi-color-error: #ef4444;

  /* UI Palette & Surfaces */
  --sdi-color-surface: #ffffff; /* File 2 Override */
  --sdi-color-on-surface: #1a1c1c;
  --sdi-color-on-surface-variant: #3f484c;
  --sdi-color-form-bg: #001f28;
  --sdi-color-outline: #6f787d;
  --sdi-color-outline-variant: #bfc8cd;
  
  --sdi-color-surface-container-lowest: #ffffff;
  --sdi-color-surface-container-low: #f8fafc; /* File 2 Override */
  --sdi-color-surface-container: #eeeeee;
  --sdi-color-surface-container-high: #e2e8f0;

  /* Slate Palette */
  --sdi-color-slate-50: #f8fafc;
  --sdi-color-slate-100: #f1f5f9;
  --sdi-color-slate-200: #e2e8f0;
  --sdi-color-slate-400: #94a3b8;
  --sdi-color-slate-500: #64748b;

  /* Borders & Grids */
  --sdi-border-width-base: 1px;
  --sdi-color-border: rgba(0, 103, 127, 0.1);
  --sdi-color-border-light: rgba(255, 255, 255, 0.1);
  --sdi-color-grid-paper: rgba(191, 200, 205, 0.2);
  --sdi-color-grid-blueprint: rgba(0, 103, 127, 0.05);

  /* Glass, Overlays & Opacities */
  --sdi-color-glass-dark: rgba(0, 45, 60, 0.85);
  --sdi-color-glass-darker: rgba(0, 35, 45, 0.9);
  --sdi-color-glass-hover: rgba(0, 60, 80, 0.9);
  --sdi-color-text-dimmed: rgba(0, 103, 127, 0.7);
  --sdi-color-text-white-dimmed: rgba(255, 255, 255, 0.7);
  --sdi-color-primary-10: rgba(0, 103, 127, 0.1);
  --sdi-color-primary-20: rgba(0, 103, 127, 0.2);
  
  --sdi-opacity-navbar: rgba(255, 255, 255, 0.8);
  --sdi-opacity-border: rgba(191, 200, 205, 0.1);
  --sdi-opacity-on-surface-60: rgba(26, 28, 28, 0.6);
  --sdi-opacity-white-60: rgba(255, 255, 255, 0.6);
  --sdi-opacity-white-40: rgba(255, 255, 255, 0.4);
  --sdi-opacity-white-20: rgba(255, 255, 255, 0.2);
  --sdi-opacity-white-10: rgba(255, 255, 255, 0.1);
  --sdi-opacity-white-05: rgba(255, 255, 255, 0.05);
  --sdi-opacity-overlay: 0.03;

  /* Numeric Spacing System */
  --sdi-spacing-1: 0.25rem;
  --sdi-spacing-2: 0.5rem;
  --sdi-spacing-3: 0.75rem;
  --sdi-spacing-4: 1rem;
  --sdi-spacing-5: 1.25rem;
  --sdi-spacing-6: 1.5rem;
  --sdi-spacing-8: 2rem;
  --sdi-spacing-10: 2.5rem;
  --sdi-spacing-12: 3rem;
  --sdi-spacing-14: 3.5rem;
  --sdi-spacing-16: 4rem;
  --sdi-spacing-20: 5rem;
  --sdi-spacing-24: 6rem;
  --sdi-spacing-32: 8rem;
  --sdi-spacing-48: 12rem;

  /* Semantic Spacing Aliases (Merged from both files) */
  --sdi-spacing-xs: var(--sdi-spacing-2);
  --sdi-spacing-sm: var(--sdi-spacing-4);
  --sdi-spacing-md: var(--sdi-spacing-6);
  --sdi-spacing-lg: var(--sdi-spacing-8);
  --sdi-spacing-xl: var(--sdi-spacing-12);
  --sdi-spacing-2xl: var(--sdi-spacing-16);
  --sdi-spacing-3xl: var(--sdi-spacing-20);
  --sdi-spacing-4xl: var(--sdi-spacing-24);
  --sdi-spacing-5xl: var(--sdi-spacing-32); /* Preserved from File 1 mapping */
  --sdi-spacing-section: var(--sdi-spacing-32);
  --sdi-spacing-nav-height: var(--sdi-spacing-16);

  /* Layout Spacing Tokens */
  --sdi-spacing-container-max: 1440px;
  --sdi-spacing-container: var(--sdi-spacing-8);
  --sdi-layout-spacing-inline: var(--sdi-spacing-container);
  --sdi-layout-spacing-sidebar: var(--sdi-spacing-16);
  --sdi-layout-spacing-main-top: var(--sdi-spacing-16);
  
  /* CLS Prevention & Component Spacing */
  --sdi-placeholder-spacing: 100vh;
  --sdi-placeholder-spacing-hero: 500px;
  --sdi-placeholder-spacing-cta: 400px;
  --sdi-hero-min-height: 80vh;
  --sdi-hero-spacing-bottom: var(--sdi-spacing-12);
  --sdi-workflow-spacing-y: var(--sdi-spacing-32);
  --sdi-workflow-spacing-x: var(--sdi-spacing-8);
  --sdi-cta-spacing-bottom: var(--sdi-spacing-12);

  /* Shapes, Shadows & Filters */
  --sdi-clip-path-default: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  --sdi-clip-path-small: polygon(0 0, calc(100% - 6px) 0, 100% 6px, 100% 100%, 0 100%);
  --sdi-shadow-nav: 0 0 20px rgba(0, 103, 127, 0.05);
  --sdi-shadow-terminal: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  --sdi-shadow-execute: 0 20px 50px var(--sdi-color-accent-dimmed);
  --sdi-blur-hud: blur(20px);

  /* Transitions */
  --sdi-transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --sdi-transition-standard: 200ms ease;
  --sdi-transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --sdi-transition-slow: 600ms cubic-bezier(0.16, 1, 0.3, 1);
  --sdi-transition-timing: 700ms; /* Preserved from File 1 */
  --sdi-transition-ease: cubic-bezier(0.4, 0, 0.2, 1); /* Preserved from File 1 */
}

/* ==========================================================================
   2. TYPOGRAPHY & GLOBAL BASE STYLES
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--sdi-color-surface);
  color: var(--sdi-color-on-surface); /* Merged: Uses File 1 base text color logic, or File 2's primary. Assuming on-surface is standard for body */
  font-family: var(--sdi-font-body);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--sdi-font-headline);
  color: var(--sdi-color-primary);
}

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

ul {
  list-style: none;
}

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

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

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

/* ==========================================================================
   3. LAYOUTS (Grid & Structure Wrappers)
   ========================================================================== */
.sdi-root {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
}

.sdi-container {
  margin: 0 auto;
  max-width: var(--sdi-spacing-container-max);
  padding: 0 var(--sdi-layout-spacing-inline);
  position: relative;
  z-index: 10;
}

.sdi-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sdi-spacing-3xl);
}

.sdi-main {
  position: relative;
  flex-grow: 1; /* From File 1 */
  min-height: 100vh;
  padding: var(--sdi-layout-spacing-main-top) 0 var(--sdi-spacing-section); /* File 2 override */
  overflow: hidden;
}

.sdi-main__grid-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(
    circle, 
    var(--sdi-color-primary) var(--sdi-border-width-base), 
    transparent var(--sdi-border-width-base)
  );
  background-size: 24px 24px;
  opacity: var(--sdi-opacity-overlay);
}

/* Background Grids */
.sdi-graph-paper,
.sdi-grid-bg {
  background-image:
    linear-gradient(to right, var(--sdi-color-grid-paper) var(--sdi-border-width-base), transparent var(--sdi-border-width-base)),
    linear-gradient(to bottom, var(--sdi-color-grid-paper) var(--sdi-border-width-base), transparent var(--sdi-border-width-base));
  background-size: 40px 40px;
}

/* Merged Blueprint Grid */
.sdi-blueprint-grid {
  position: absolute; /* Preserved from File 1 */
  inset: 0; /* Preserved from File 1 */
  background-image:
    linear-gradient(to right, var(--sdi-color-grid-blueprint) var(--sdi-border-width-base), transparent var(--sdi-border-width-base)),
    linear-gradient(to bottom, var(--sdi-color-grid-blueprint) var(--sdi-border-width-base), transparent var(--sdi-border-width-base)); /* File 2 Override */
  background-size: 50px 50px; /* File 2 Override */
  opacity: 0.05; /* Preserved from File 1 */
  pointer-events: none; /* Preserved from File 1 */
}

/* ==========================================================================
   4. COMPONENT STYLES
   ========================================================================== */

/* Aspect Ratio & Clipping */
.sdi-aspect-ratio {
  aspect-ratio: var(--sdi-ratio, 16 / 9);
  background-color: var(--sdi-color-border);
  overflow: hidden;
}

.sdi-clipped-corner { clip-path: var(--sdi-clip-path-default); }
.sdi-clipped-corner--small { clip-path: var(--sdi-clip-path-small); }

/* Button */
.sdi-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  text-transform: uppercase;
  transition: all var(--sdi-transition-normal);
}

/* HUD Block */
.sdi-hud {
  position: fixed;
  bottom: var(--sdi-spacing-12);
  right: var(--sdi-spacing-12);
  display: none;
}

.sdi-hud__container {
  background-color: var(--sdi-opacity-white-60);
  backdrop-filter: var(--sdi-blur-hud);
  padding: var(--sdi-spacing-4);
  border: var(--sdi-border-width-base) solid var(--sdi-color-primary-20);
  position: relative;
  width: 16rem;
}

.sdi-hud__corner {
  position: absolute;
  width: var(--sdi-spacing-2);
  height: var(--sdi-spacing-2);
  border-color: var(--sdi-color-primary);
}

.sdi-hud__corner--top-left {
  top: 0;
  left: 0;
  border-top: var(--sdi-border-width-base) solid;
  border-left: var(--sdi-border-width-base) solid;
}

.sdi-hud__corner--bottom-right {
  bottom: 0;
  right: 0;
  border-bottom: var(--sdi-border-width-base) solid;
  border-right: var(--sdi-border-width-base) solid;
}

.sdi-hud__status {
  display: flex;
  align-items: center;
  gap: var(--sdi-spacing-3);
  margin-bottom: var(--sdi-spacing-4);
}

.sdi-hud__status-indicator {
  width: var(--sdi-spacing-2);
  height: var(--sdi-spacing-2);
  background-color: var(--sdi-color-primary);
  border-radius: 9999px;
  animation: sdi-pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.sdi-hud__status-text {
  font-family: var(--sdi-font-headline);
  font-size: var(--sdi-font-size-tiny);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
}

.sdi-hud__stats {
  display: flex;
  flex-direction: column;
  gap: var(--sdi-spacing-2);
}

.sdi-hud__stat {
  display: flex;
  justify-content: space-between;
  font-size: var(--sdi-font-size-tiny);
  text-transform: uppercase;
  font-family: var(--sdi-font-body);
  color: var(--sdi-color-slate-500);
}

.sdi-hud__stat-value {
  color: var(--sdi-color-primary);
}

.sdi-hud__progress-bar {
  width: 100%;
  height: var(--sdi-spacing-1);
  background-color: var(--sdi-color-slate-100);
}

.sdi-hud__progress-fill {
  width: 85%;
  height: 100%;
  background-color: var(--sdi-color-primary);
  transition: width 1s ease;
}

/* Material Symbols Helper */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 300, 'GRAD' 0, 'opsz' 24;
  display: inline-block;
  width: 24px;
  height: 24px;
}

/* ==========================================================================
   5. UTILITIES & ANIMATIONS
   ========================================================================== */

/* Accessibility / Hidden utilities (Merged) */
.sdi-visually-hidden,
.sr-only {
  position: absolute;
  width: var(--sdi-border-width-base);
  height: var(--sdi-border-width-base);
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Performance Utilities */
.sdi-optimize-render,
.sdi-contain-render {
  content-visibility: auto;
  contain-intrinsic-size: var(--sdi-border-width-base) 500px;
}

.sdi-lazy-section {
  content-visibility: auto;
  contain-intrinsic-size: var(--sdi-border-width-base) var(--sdi-placeholder-spacing);
}

/* Scroll Animations */
.sdi-animate-on-scroll {
  opacity: 0;
  transform: translateY(var(--sdi-spacing-8));
  transition: opacity var(--sdi-transition-slow), transform var(--sdi-transition-slow);
  transition-delay: var(--sdi-animation-delay, 0s);
}

.sdi-animate-on-scroll.sdi-animated {
  opacity: 1;
  transform: translateY(0);
}

/* Data-Attribute Triggers */
[data-animation="fade-in-up"] { transform: translateY(var(--sdi-spacing-8)); }
[data-animation="fade-in-left"] { transform: translateX(calc(var(--sdi-spacing-8) * -1)); }
[data-animation="fade-in-right"] { transform: translateX(var(--sdi-spacing-8)); }
[data-animation="fade-in-scale"] { transform: scale(0.95); }

.sdi-animate-on-scroll.sdi-animated[data-animation="fade-in-up"],
.sdi-animate-on-scroll.sdi-animated[data-animation="fade-in-left"],
.sdi-animate-on-scroll.sdi-animated[data-animation="fade-in-right"],
.sdi-animate-on-scroll.sdi-animated[data-animation="fade-in-scale"] {
  transform: translate(0, 0) scale(1);
}

/* Utility Class Animations */
.sdi-animate--fade-in-left,
.sdi-slide-left {
  animation: sdi-slide-left var(--sdi-transition-slow) forwards;
}

.sdi-animate--fade-in-up,
.sdi-slide-up {
  animation: sdi-slide-up var(--sdi-transition-slow) forwards;
  opacity: 0;
  animation-play-state: paused;
}

.sdi-animate--scale-in {
  animation: sdi-scale-in var(--sdi-transition-slow) forwards;
  opacity: 0;
  animation-play-state: paused;
}

.sdi-animate--active .sdi-animate--fade-in-up,
.sdi-animate--active .sdi-animate--scale-in,
.sdi-animate--immediate {
  animation-play-state: running !important;
}

/* Keyframes */
@keyframes sdi-slide-left {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes sdi-slide-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes sdi-scale-in {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes sdi-blinker {
  50% { opacity: 0; }
}

/* File 2 pulse overrides File 1's version */
@keyframes sdi-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Preserved from File 1 */
@keyframes sdi-type {
  from { width: 0; }
  to { width: 100%; }
}

@keyframes sdi-blink {
  50% { border-color: transparent; }
}

/* ==========================================================================
   6. MEDIA QUERIES
   ========================================================================== */

@media (min-width: 768px) {
  .sdi-main {
    margin-left: var(--sdi-layout-spacing-sidebar);
  }
}

@media (min-width: 1024px) {
  .sdi-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }
  
  .sdi-hud {
    display: block;
  }
}