/* ===================================
   DESIGN SYSTEM - IMAGE TOOLS APP
   Premium Dark Theme with Glassmorphism
   =================================== */

:root {
  /* ===== COLOR PALETTE ===== */
  /* Primary gradient colors (Purple → Blue → Pink) */
  --color-primary-500: hsl(265, 85%, 60%);
  --color-primary-600: hsl(265, 80%, 50%);
  --color-primary-700: hsl(265, 75%, 40%);

  --color-accent-blue: hsl(215, 90%, 55%);
  --color-accent-pink: hsl(320, 85%, 60%);
  --color-accent-cyan: hsl(185, 85%, 55%);

  /* Neutrals - Dark theme */
  --color-bg-base: hsl(230, 25%, 8%);
  --color-bg-elevated: hsl(230, 20%, 12%);
  --color-bg-card: hsl(230, 20%, 15%);
  --color-bg-input: hsl(230, 15%, 18%);

  /* Glassmorphism */
  --glass-bg: hsla(230, 20%, 15%, 0.7);
  --glass-border: hsla(0, 0%, 100%, 0.1);
  --glass-hover: hsla(230, 20%, 20%, 0.8);

  /* Text */
  --color-text-primary: hsl(0, 0%, 95%);
  --color-text-secondary: hsl(0, 0%, 70%);
  --color-text-tertiary: hsl(0, 0%, 50%);

  /* Semantic colors */
  --color-success: hsl(145, 70%, 55%);
  --color-warning: hsl(40, 95%, 60%);
  --color-error: hsl(355, 80%, 60%);
  --color-info: hsl(200, 90%, 60%);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--color-primary-500), var(--color-accent-blue));
  --gradient-accent: linear-gradient(135deg, var(--color-accent-pink), var(--color-primary-500));
  --gradient-hero: linear-gradient(135deg,
      hsl(265, 85%, 60%) 0%,
      hsl(240, 85%, 55%) 25%,
      hsl(215, 90%, 55%) 50%,
      hsl(280, 85%, 60%) 75%,
      hsl(320, 85%, 60%) 100%);
  --gradient-card: linear-gradient(135deg,
      hsla(265, 60%, 50%, 0.1) 0%,
      hsla(215, 60%, 50%, 0.05) 100%);

  /* ===== SPACING ===== */
  --space-1: 0.25rem;
  /* 4px */
  --space-2: 0.5rem;
  /* 8px */
  --space-3: 0.75rem;
  /* 12px */
  --space-4: 1rem;
  /* 16px */
  --space-5: 1.5rem;
  /* 24px */
  --space-6: 2rem;
  /* 32px */
  --space-8: 3rem;
  /* 48px */
  --space-10: 4rem;
  /* 64px */
  --space-12: 6rem;
  /* 96px */
  --space-16: 8rem;
  /* 128px */

  /* ===== TYPOGRAPHY ===== */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Source Code Pro', 'Courier New', monospace;

  --font-size-xs: 0.75rem;
  /* 12px */
  --font-size-sm: 0.875rem;
  /* 14px */
  --font-size-base: 1rem;
  /* 16px */
  --font-size-lg: 1.125rem;
  /* 18px */
  --font-size-xl: 1.25rem;
  /* 20px */
  --font-size-2xl: 1.5rem;
  /* 24px */
  --font-size-3xl: 1.875rem;
  /* 30px */
  --font-size-4xl: 2.25rem;
  /* 36px */
  --font-size-5xl: 3rem;
  /* 48px */

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

  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* ===== SHADOWS ===== */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(147, 51, 234, 0.3);
  --shadow-glow-blue: 0 0 30px rgba(59, 130, 246, 0.3);
  --shadow-glow-pink: 0 0 30px rgba(236, 72, 153, 0.3);

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

  --border-width: 1px;
  --border-width-2: 2px;

  /* ===== TRANSITIONS ===== */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);

  /* ===== Z-INDEX ===== */
  --z-dropdown: 1000;
  --z-modal: 2000;
  --z-toast: 3000;
  --z-tooltip: 4000;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-base);
  background-image:
    radial-gradient(circle at 20% 20%, hsla(265, 85%, 60%, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, hsla(215, 90%, 55%, 0.08) 0%, transparent 50%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== UTILITY CLASSES ===== */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.container-fluid {
  width: 100%;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

/* Text utilities */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.text-primary {
  color: var(--color-primary-500);
}

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

.text-tertiary {
  color: var(--color-text-tertiary);
}

/* Display utilities */
.hidden {
  display: none !important;
}

.flex {
  display: flex;
}

.grid {
  display: grid;
}

.block {
  display: block;
}

.inline-block {
  display: inline-block;
}

/* Flex utilities */
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-col {
  display: flex;
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-2 {
  gap: var(--space-2);
}

.gap-3 {
  gap: var(--space-3);
}

.gap-4 {
  gap: var(--space-4);
}

.gap-6 {
  gap: var(--space-6);
}

/* Spacing utilities */
.mt-2 {
  margin-top: var(--space-2);
}

.mt-4 {
  margin-top: var(--space-4);
}

.mt-6 {
  margin-top: var(--space-6);
}

.mt-8 {
  margin-top: var(--space-8);
}

.mb-2 {
  margin-bottom: var(--space-2);
}

.mb-4 {
  margin-bottom: var(--space-4);
}

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

.mb-8 {
  margin-bottom: var(--space-8);
}

.p-4 {
  padding: var(--space-4);
}

.p-6 {
  padding: var(--space-6);
}

.p-8 {
  padding: var(--space-8);
}

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

/* Glass effect utility */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: var(--border-width) solid var(--glass-border);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }

  100% {
    background-position: 1000px 0;
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0px);
  }

  50% {
    transform: translateY(-10px);
  }
}

@keyframes pulse-glow {

  0%,
  100% {
    box-shadow: var(--shadow-glow);
  }

  50% {
    box-shadow: 0 0 50px rgba(147, 51, 234, 0.5);
  }
}

.animate-fadeIn {
  animation: fadeIn var(--transition-base) ease-out;
}

.animate-slideUp {
  animation: slideUp var(--transition-slow) ease-out;
}

.animate-slideDown {
  animation: slideDown var(--transition-slow) ease-out;
}

.animate-scaleIn {
  animation: scaleIn var(--transition-base) ease-out;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-elevated);
}

::-webkit-scrollbar-thumb {
  background: var(--color-bg-input);
  border-radius: var(--border-radius-md);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-600);
}

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

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

/* ===== THEME TOGGLE BUTTON ===== */
.theme-toggle-btn {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: calc(var(--z-modal) - 100);
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius-full);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: var(--border-width) solid var(--glass-border);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  user-select: none;
}

.theme-toggle-btn:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: var(--color-primary-500);
}

.theme-toggle-btn:active {
  transform: scale(0.95);
}

.theme-toggle-icon {
  font-size: var(--font-size-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-bounce);
}

.theme-toggle-btn:hover .theme-toggle-icon {
  transform: rotate(20deg) scale(1.1);
}

/* Mobile adjustments */
@media (max-width: 768px) {
  .theme-toggle-btn {
    width: 44px;
    height: 44px;
  }
}

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

/* Glass effect utility */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: var(--border-width) solid var(--glass-border);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }

  100% {
    background-position: 1000px 0;
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0px);
  }

  50% {
    transform: translateY(-10px);
  }
}

@keyframes pulse-glow {

  0%,
  100% {
    box-shadow: var(--shadow-glow);
  }

  50% {
    box-shadow: 0 0 50px rgba(147, 51, 234, 0.5);
  }
}

.animate-fadeIn {
  animation: fadeIn var(--transition-base) ease-out;
}

.animate-slideUp {
  animation: slideUp var(--transition-slow) ease-out;
}

.animate-slideDown {
  animation: slideDown var(--transition-slow) ease-out;
}

.animate-scaleIn {
  animation: scaleIn var(--transition-base) ease-out;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-elevated);
}

::-webkit-scrollbar-thumb {
  background: var(--color-bg-input);
  border-radius: var(--border-radius-md);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-600);
}

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

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

/* ===== THEME TOGGLE BUTTON ===== */
.theme-toggle-btn {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: calc(var(--z-modal) - 100);
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius-full);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: var(--border-width) solid var(--glass-border);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  user-select: none;
}

.theme-toggle-btn:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: var(--color-primary-500);
}

.theme-toggle-btn:active {
  transform: scale(0.95);
}

.theme-toggle-icon {
  font-size: var(--font-size-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-bounce);
}

.theme-toggle-btn:hover .theme-toggle-icon {
  transform: rotate(20deg) scale(1.1);
}

/* Mobile adjustments */
@media (max-width: 768px) {
  .theme-toggle-btn {
    width: 44px;
    height: 44px;
  }
}

/* ===== LANGUAGE SELECTOR ===== */
.language-selector {
  position: relative;
  display: flex;
  gap: var(--space-2);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: var(--border-width) solid var(--glass-border);
  border-radius: var(--border-radius-full);
  padding: var(--space-1);
  box-shadow: var(--shadow-sm);
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: transparent;
  border: var(--border-width) solid transparent;
  border-radius: var(--border-radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  user-select: none;
  min-width: 70px;
  justify-content: center;
}

.lang-btn:hover {
  background: var(--glass-hover);
  color: var(--color-text-primary);
  transform: translateY(-1px);
}

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

.lang-btn.active {
  background: var(--gradient-primary);
  border-color: var(--color-primary-500);
  color: white;
  box-shadow: var(--shadow-glow);
}

.lang-btn .flag {
  font-size: 1.5rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lang-btn .flag img {
  width: 24px;
  height: 24px;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

/* Mobile adjustments for language selector */
@media (max-width: 768px) {
  .language-selector {
    top: var(--space-4);
    right: calc(var(--space-4) + 56px);
    gap: var(--space-1);
    padding: 4px;
  }

  .lang-btn {
    padding: 6px 10px;
    font-size: var(--font-size-xs);
    min-width: 60px;
  }

  .lang-btn .flag {
    font-size: 1.25rem;
  }
}

@media (max-width: 480px) {
  .language-selector {
    flex-direction: column;
    right: var(--space-4);
    top: calc(var(--space-4) + 56px);
  }
}

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

.main-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  transition: all var(--transition-base);
}

.main-header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  gap: var(--space-6);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  text-decoration: none;
  transition: all var(--transition-base);
}

.logo:hover {
  transform: translateY(-2px);
}

.logo-icon {
  font-size: var(--font-size-3xl);
  line-height: 1;
}

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

.logo-img {
  height: 40px;
  width: auto;
  image-rendering: auto;
  -webkit-font-smoothing: antialiased;
  transform: translateZ(0);
}

/* Main Navigation */
.main-nav {
  display: flex;
  gap: var(--space-2);
  flex: 1;
  justify-content: center;
}

.nav-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--border-radius-lg);
  background: transparent;
  border: 1px solid transparent;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
}

.nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 80%;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: var(--border-radius-full);
  transition: transform var(--transition-base);
}

.nav-link:hover {
  background: var(--glass-hover);
  color: var(--color-text-primary);
  transform: translateY(-2px);
}

.nav-link:hover::before {
  transform: translateX(-50%) scaleX(1);
}

.nav-link.active {
  background: var(--gradient-card);
  border-color: var(--glass-border);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-sm);
}

.nav-link.active::before {
  transform: translateX(-50%) scaleX(1);
}

.nav-icon {
  font-size: var(--font-size-2xl);
  line-height: 1;
}

.nav-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Tool Hub Sections */
.tool-hub {
  padding: var(--space-12) 0;
  border-top: 1px solid var(--glass-border);
}

.tool-hub:first-of-type {
  border-top: none;
}

.hub-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.hub-icon {
  font-size: var(--font-size-5xl);
  margin-bottom: var(--space-4);
  display: inline-block;
  animation: float 3s ease-in-out infinite;
}

.hub-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-3);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hub-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.hub-badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--gradient-accent);
  color: white;
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-left: var(--space-2);
}

/* Responsive Navigation */
@media (max-width: 1024px) {
  .header-content {
    gap: var(--space-4);
  }

  .main-nav {
    gap: var(--space-1);
  }

  .nav-link {
    padding: var(--space-2) var(--space-4);
  }

  .nav-icon {
    font-size: var(--font-size-xl);
  }

  .nav-label {
    font-size: var(--font-size-xs);
  }
}

@media (max-width: 768px) {
  .header-content {
    flex-wrap: wrap;
  }

  .logo {
    order: 1;
  }

  .header-actions {
    order: 2;
  }

  .main-nav {
    order: 3;
    width: 100%;
    justify-content: space-around;
    padding-top: var(--space-3);
    border-top: 1px solid var(--glass-border);
  }

  .nav-link {
    flex: 1;
    padding: var(--space-2) var(--space-2);
  }

  .hub-title {
    font-size: var(--font-size-3xl);
  }

  .hub-icon {
    font-size: var(--font-size-4xl);
  }
}

@media (max-width: 480px) {
  .logo-text {
    display: none;
  }

  .nav-label {
    font-size: 0.65rem;
  }

  .nav-icon {
    font-size: var(--font-size-lg);
  }

  .hub-title {
    font-size: var(--font-size-2xl);
  }
}

/* ===== LANGUAGE DROPDOWN ===== */
.language-dropdown {
  position: relative;
}

.language-dropdown-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: var(--border-width) solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  min-width: 100px;
}

.language-dropdown-btn:hover {
  background: var(--glass-hover);
  border-color: var(--color-primary-500);
}

.dropdown-arrow {
  font-size: 0.6em;
  opacity: 0.7;
  transition: transform var(--transition-base);
}

.language-dropdown.open .dropdown-arrow {
  transform: rotate(180deg);
}

.language-dropdown-menu {
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 0;
  min-width: 140px;
  background: var(--color-bg-elevated);
  border: var(--border-width) solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
  z-index: var(--z-dropdown);
  overflow: hidden;
}

.language-dropdown.open .language-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  z-index: 100000 !important;
}

.lang-option {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.lang-option:hover {
  background: var(--glass-hover);
  color: var(--color-text-primary);
}

.lang-option.active {
  background: var(--gradient-primary);
  color: white;
}

/* ===== INLINE THEME TOGGLE (for header) ===== */
.header-actions .theme-toggle-btn {
  position: static;
  width: 40px;
  height: 40px;
}

@media (max-width: 768px) {
  .language-dropdown-btn {
    padding: var(--space-2) var(--space-3);
    min-width: 80px;
    font-size: var(--font-size-xs);
  }

  .header-actions .theme-toggle-btn {
    width: 36px;
    height: 36px;
  }
}

@media (max-width: 480px) {
  .language-dropdown-btn {
    min-width: 70px;
  }

  .current-lang {
    display: none;
  }

  .language-dropdown-btn::before {
    content: '🌐';
    font-size: 1.2rem;
  }
}