/*
 * Theme Tokens
 * Dark mode (default) + Light mode override
 * Smooth 0.4s transitions on theme switch
 */

:root {
  /* Dark Mode (Default) — TRMNL-inspired warmth */
  --color-bg: #0f0f0f;
  --color-bg-elevated: #1a1a1a;
  --color-bg-card: #202020;
  --color-surface: #2a2a2a;
  --color-text: #f8f7f4;
  --color-text-muted: #9a9a9a;
  --color-text-subtle: #666666;
  --color-accent: #ea580c;
  --color-accent-hover: #f97316;
  --color-accent-soft: rgba(234, 88, 12, 0.15);
  --color-accent-softer: rgba(234, 88, 12, 0.08);
  --border-color: rgba(255, 255, 255, 0.06);
  --border-color-strong: rgba(255, 255, 255, 0.12);
  --nav-bg: rgba(15, 15, 15, 0.85);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.6);
  --selection-bg: rgba(234, 88, 12, 0.3);
  --selection-text: #fed7aa;
}

/* Light Mode Override — TRMNL-inspired warm off-white */
[data-theme="light"] {
  --color-bg: #fafaf8;
  --color-bg-elevated: #ffffff;
  --color-bg-card: #ffffff;
  --color-surface: #f5f5f3;
  --color-text: #1a1a1a;
  --color-text-muted: #6b6b6b;
  --color-text-subtle: #999999;
  --color-accent: #c2410c;
  --color-accent-hover: #ea580c;
  --color-accent-soft: rgba(194, 65, 12, 0.12);
  --color-accent-softer: rgba(194, 65, 12, 0.06);
  --border-color: rgba(0, 0, 0, 0.06);
  --border-color-strong: rgba(0, 0, 0, 0.10);
  --nav-bg: rgba(250, 250, 248, 0.85);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.10);
  --selection-bg: rgba(194, 65, 12, 0.2);
  --selection-text: #7c2d12;
}

/* System preference fallback (when no explicit choice saved) */
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --color-bg: #fafaf8;
    --color-bg-elevated: #ffffff;
    --color-bg-card: #ffffff;
    --color-surface: #f5f5f3;
    --color-text: #1a1a1a;
    --color-text-muted: #6b6b6b;
    --color-text-subtle: #999999;
    --color-accent: #c2410c;
    --color-accent-hover: #ea580c;
    --color-accent-soft: rgba(194, 65, 12, 0.12);
    --color-accent-softer: rgba(194, 65, 12, 0.06);
    --border-color: rgba(0, 0, 0, 0.06);
    --border-color-strong: rgba(0, 0, 0, 0.10);
    --nav-bg: rgba(250, 250, 248, 0.85);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.10);
    --selection-bg: rgba(194, 65, 12, 0.2);
    --selection-text: #7c2d12;
  }
}

/* Global transition for theme switch */
body {
  background-color: var(--color-bg);
  color: var(--color-text);
  transition: background-color 0.4s ease, color 0.4s ease;
}

/* Selection colors */
::selection {
  background: var(--selection-bg);
  color: var(--selection-text);
}

/* Theme toggle button */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-softer);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  transition: transform 0.3s ease;
}

.theme-toggle:hover svg {
  transform: rotate(15deg);
}

/* Testimonial logos — grayscale, invert in light mode */
.testimonial-logo {
  filter: grayscale(1) brightness(2);
  transition: filter 0.4s;
}

[data-theme="light"] .testimonial-logo {
  filter: grayscale(1) brightness(0.5);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .testimonial-logo {
    filter: grayscale(1) brightness(0.5);
  }
}

/* Hero glow — hide in light mode */
[data-theme="light"] .hero-glow {
  opacity: 0;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .hero-glow {
    opacity: 0;
  }
}

/* Spline container */
.spline-container {
  background: transparent;
  transition: background 0.4s ease;
}

[data-theme="light"] .spline-container {
  background: transparent;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .spline-container {
    background: transparent;
  }
}

/* Hero subtitle and CTA - darker in light mode for readability */
.hero-subtitle {
  color: var(--color-text-muted);
}

.hero-cta {
  color: var(--color-text-muted);
  background: var(--color-accent-softer);
  box-shadow: 0 0 20px rgba(234, 88, 12, 0.15), 0 0 40px rgba(234, 88, 12, 0.08);
}

.hero-cta:hover {
  background: var(--color-accent-soft);
  box-shadow: 0 0 25px rgba(234, 88, 12, 0.25), 0 0 50px rgba(234, 88, 12, 0.12);
}

[data-theme="light"] .hero-subtitle,
[data-theme="light"] .hero-cta {
  color: #4b5563;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .hero-subtitle,
  :root:not([data-theme="dark"]) .hero-cta {
    color: #4b5563;
  }
}

/* Hero warm vignette in light mode - full seamless gradient */
[data-theme="light"] .debug-hero {
  background: linear-gradient(to right, #fafaf8 0%, #f0ede8 25%, #e5e0d8 50%, #d5cfc5 75%, #c5bfb5 100%) !important;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .debug-hero {
    background: linear-gradient(to right, #fafaf8 0%, #f0ede8 25%, #e5e0d8 50%, #d5cfc5 75%, #c5bfb5 100%) !important;
  }
}

/* Hero bottom fade - blends into next section */
.hero-bottom-fade {
  background: linear-gradient(to bottom, transparent 0%, var(--color-bg) 100%);
}

[data-theme="light"] .hero-bottom-fade {
  background: linear-gradient(to bottom, transparent 0%, #fafaf8 100%);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .hero-bottom-fade {
    background: linear-gradient(to bottom, transparent 0%, #fafaf8 100%);
  }
}

/* Feature cards — glassmorphism adapts to theme */
.debug-feature-card {
  transition: background-color 0.4s ease, border-color 0.4s ease;
}

[data-theme="light"] .debug-feature-card {
  background: linear-gradient(135deg, var(--color-bg-card), var(--color-surface));
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .debug-feature-card {
    background: linear-gradient(135deg, var(--color-bg-card), var(--color-surface));
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
  }
}

/* Work section cards */
.work-card {
  background: linear-gradient(135deg, var(--color-accent-softer), transparent);
  border: 1px solid var(--border-color);
}

.work-card:hover {
  border-color: var(--color-accent-soft);
}

.work-card-fade {
  background: linear-gradient(to top, var(--color-bg), transparent);
}

.work-card-mini {
  background: var(--color-bg);
}

/* Contact form inputs */
.contact-input {
  color: var(--color-text);
  border-bottom: 1px solid var(--border-color);
}

.contact-input:focus {
  border-color: var(--color-accent);
}

.contact-label {
  color: var(--color-text-subtle);
}

.contact-input:focus + .contact-label,
.peer:focus ~ .contact-label {
  color: var(--color-accent);
}

/* Contact submit button — inverts between modes */
.contact-submit-btn {
  background-color: var(--color-text);
  color: var(--color-bg);
}

.contact-submit-btn:hover {
  opacity: 0.85;
}

/* ============ SITE HEADER / NAV ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  padding: 0.5rem 0;
  transition: background 0.3s ease, backdrop-filter 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background: var(--nav-bg);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

/* Light mode: nav matches hero gradient with scroll-based opacity */
[data-theme="light"] .site-header.scrolled {
  background: linear-gradient(to right,
    rgba(221, 217, 212, var(--nav-scroll-opacity, 0.85)),
    rgba(206, 199, 191, var(--nav-scroll-opacity, 0.85)),
    rgba(184, 176, 166, var(--nav-scroll-opacity, 0.85))
  );
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .site-header.scrolled {
    background: linear-gradient(to right,
      rgba(221, 217, 212, var(--nav-scroll-opacity, 0.85)),
      rgba(206, 199, 191, var(--nav-scroll-opacity, 0.85)),
      rgba(184, 176, 166, var(--nav-scroll-opacity, 0.85))
    );
  }
}

/* Icon visibility based on theme */
.theme-toggle .icon-sun {
  display: none;
}

.theme-toggle .icon-moon {
  display: block;
}

[data-theme="light"] .theme-toggle .icon-sun {
  display: block;
}

[data-theme="light"] .theme-toggle .icon-moon {
  display: none;
}

/* System preference: show sun in light mode */
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .theme-toggle .icon-sun {
    display: block;
  }
  :root:not([data-theme="dark"]) .theme-toggle .icon-moon {
    display: none;
  }
}

/* Nav link hover — orange glow like How We Work section */
.nav-link {
  position: relative;
}

.nav-link:hover {
  color: var(--color-accent) !important;
  text-shadow: 0 0 20px rgba(234, 88, 12, 0.5), 0 0 40px rgba(234, 88, 12, 0.3);
}

/* ============ MOBILE MENU ============ */
.mobile-menu.open {
  pointer-events: auto;
  opacity: 1;
}

.mobile-menu.open .mobile-menu-panel {
  transform: translateX(0);
}

.mobile-nav-link {
  min-height: 52px;
}

.mobile-nav-link:hover,
.mobile-nav-link:active {
  background: var(--color-accent-softer);
  color: var(--color-accent) !important;
}

.mobile-cta-btn:hover {
  opacity: 0.9;
}

/* Hamburger button styling */
.hamburger-btn {
  -webkit-tap-highlight-color: transparent;
}

.hamburger-btn:hover svg {
  color: var(--color-accent) !important;
}

/* ============ TOUCH TARGETS ============ */
/* Ensure minimum 44x44px touch targets on mobile */
@media (max-width: 768px) {
  .nav-link,
  .hero-cta,
  .theme-toggle,
  .hamburger-btn,
  button,
  a[href] {
    min-height: 44px;
    min-width: 44px;
  }

  /* Ensure links in tight spaces still work via padding */
  .mobile-nav-link {
    min-height: 52px;
    padding: 14px 16px;
  }
}