/* ============================================
   HugHug App - Main Stylesheet
   ============================================ */

/* ============================================
   CSS Variables (Design Tokens)
   ============================================ */
:root {
  /* Colors */
  --color-primary: #23d1ae;
  --color-secondary: #8a2be2;
  --color-dark: #0a0a0a;
  --color-card: #1a1a1a;
  --color-text: #f5f5f5;
  --color-text-muted: #a3a3a3;
  --color-white: #ffffff;
  --color-black: #000000;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  --gradient-overlay: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.8));

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Font Sizes */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 4rem;

  /* Font Family */
  --font-family-base: 'PingFang SC', 'Microsoft YaHei', 'Inter', system-ui, sans-serif;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  --radius-2xl: 3rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* 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);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Z-index */
  --z-dropdown: 10;
  --z-sticky: 20;
  --z-fixed: 30;
  --z-modal-backdrop: 40;
  --z-modal: 50;
  --z-popover: 60;
  --z-tooltip: 70;
}

/* ============================================
   Reset & 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-family-base);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-dark);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

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

ul, ol {
  list-style: none;
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: #333;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #555;
}

/* ============================================
   WeChat Browser Overlay
   ============================================ */
.wechat-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.88);
  z-index: 9999;
  padding: 0;
  cursor: pointer;
}

.wechat-overlay.active {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: flex-end;
  padding-top: var(--spacing-md);
  padding-right: var(--spacing-sm);
}

.wechat-overlay__content {
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.wechat-overlay__arrow {
  margin-bottom: var(--spacing-lg);
  animation: bounce 2s infinite;
}

.wechat-overlay__arrow-svg {
  width: 80px;
  height: 80px;
  display: block;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.wechat-overlay__arrow-img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  display: block;
}

.wechat-overlay__text {
  color: var(--color-white);
  text-align: right;
  padding-right: var(--spacing-md);
}

.wechat-overlay__title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-white);
}

.wechat-overlay__desc {
  font-size: var(--font-size-base);
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.6;
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-15px);
  }
}

/* ============================================
   Layout Components
   ============================================ */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
}

/* ============================================
   Navigation Bar
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  transition: all var(--transition-base);
  background-color: transparent;
  padding: var(--spacing-md) 0;
}

.navbar.scrolled {
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(12px);
  padding: var(--spacing-sm) 0;
  box-shadow: var(--shadow-sm);
}

.navbar__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
}

.navbar__logo-image {
  height: 48px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
  transition: opacity var(--transition-base);
}

.navbar__logo:hover .navbar__logo-image {
  opacity: 0.8;
}

.navbar__logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
}

.navbar__logo-icon span {
  color: var(--color-white);
  font-family: serif;
  font-style: italic;
  font-weight: 700;
  font-size: var(--font-size-xl);
}

.navbar__logo-text {
  color: var(--color-white);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.navbar__menu {
  display: none;
  align-items: center;
  gap: var(--spacing-xl);
}

@media (min-width: 1024px) {
  .navbar__menu {
    display: flex;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
  }
}

.navbar__link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  transition: color var(--transition-base);
  display: flex;
  align-items: center;
  gap: 0.25rem;
  white-space: nowrap;
}

.navbar__link:hover {
  color: var(--color-white);
}

.navbar__link-icon {
  width: 12px;
  height: 12px;
  color: rgba(255, 255, 255, 0.7);
  transition: transform var(--transition-fast);
}

.navbar__link:hover .navbar__link-icon {
  transform: rotate(180deg);
}

.navbar__right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.navbar__language {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  margin-right: var(--spacing-md);
}

.language-option {
  cursor: pointer;
  transition: all var(--transition-base);
  user-select: none;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
}

.language-option:hover {
  color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.1);
}

.language-option.active {
  color: var(--color-white);
  font-weight: 700;
  background-color: rgba(255, 255, 255, 0.15);
}

.language-separator {
  color: rgba(255, 255, 255, 0.4);
  user-select: none;
}

.navbar__mobile-toggle {
  color: var(--color-white);
  transition: color var(--transition-base);
}

.navbar__mobile-toggle:hover {
  color: var(--color-primary);
}

@media (min-width: 1024px) {
  .navbar__mobile-toggle {
    display: none;
  }
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(24px);
  z-index: var(--z-modal);
  padding: 6rem var(--spacing-lg) 0;
  animation: fadeIn 0.3s ease-out forwards;
}

.mobile-menu.active {
  display: flex;
  flex-direction: column;
}

.mobile-menu__close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  color: var(--color-white);
}

.mobile-menu__links {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.mobile-menu__link {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-white);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.mobile-menu__link-icon {
  width: 20px;
  height: 20px;
  transform: rotate(-90deg);
  color: rgba(255, 255, 255, 0.5);
}

.mobile-menu__language {
  margin-top: var(--spacing-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.6);
  font-weight: 500;
  padding: var(--spacing-md) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  position: relative;
  width: 100%;
  min-height: 800px;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: var(--color-black);
}

.hero__background {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.9;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: var(--gradient-overlay);
}

.hero__bottom-fade {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 8rem;
  background: linear-gradient(to top, var(--color-dark), transparent);
}

.hero__content {
  position: relative;
  z-index: var(--z-dropdown);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding-top: 5rem;
}

.hero__title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-white);
  margin-bottom: var(--spacing-2xl);
  text-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  line-height: 1.2;
  padding: 0 var(--spacing-xl);
}

@media (min-width: 480px) {
  .hero__title {
    font-size: 2.5rem;
    padding: 0 var(--spacing-2xl);
  }
}

@media (min-width: 768px) {
  .hero__title {
    font-size: var(--font-size-6xl);
    padding: 0 var(--spacing-xl);
  }
}

@media (min-width: 1024px) {
  .hero__title {
    font-size: 4.5rem;
  }
}

.hero__downloads {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  width: 100%;
  max-width: 64rem;
  justify-content: center;
}

@media (min-width: 768px) {
  .hero__downloads {
    flex-direction: row;
  }
}

.download-button {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--spacing-sm);
  background-color: rgba(0, 0, 0, 0.7);
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
  width: 16rem;
  height: 4rem;
  backdrop-filter: blur(12px);
  position: relative;
}

.download-button:hover {
  background-color: var(--color-black);
  border-color: var(--color-white);
}

.download-button__icon {
  width: 32px;
  height: 32px;
  color: var(--color-white);
  transition: transform var(--transition-base);
}

.download-button:hover .download-button__icon {
  transform: scale(1.1);
}

.download-button__text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.3;
}

.download-button__label {
  font-size: 0.625rem;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 500;
}

.download-button__platform {
  font-size: var(--font-size-lg);
  font-weight: 700;
}

.download-button__platform-suffix {
  font-size: var(--font-size-xs);
  font-weight: 400;
  opacity: 0.7;
}

/* QR Code Popup */
.download-button__qrcode {
  display: none;
  position: absolute;
  bottom: calc(100% + 1rem);
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-2xl);
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  min-width: 180px;
  z-index: var(--z-popover);
  animation: fadeInUp 0.3s ease-out;
}

.download-button__qrcode::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-top: 10px solid var(--color-white);
}

@media (min-width: 768px) {
  .download-button:hover .download-button__qrcode {
    display: flex;
  }
}

.qrcode-image {
  width: 150px;
  height: 150px;
  border: 2px solid #f0f0f0;
  border-radius: var(--radius-sm);
  object-fit: contain;
  aspect-ratio: 1 / 1;
}

.qrcode-text {
  font-size: var(--font-size-sm);
  color: var(--color-dark);
  font-weight: 600;
  text-align: center;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-sticky);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  animation: bounce 2s infinite;
  opacity: 0.8;
  pointer-events: none;
}

.scroll-indicator__mouse {
  width: 30px;
  height: 50px;
  border: 2px solid rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-full);
  display: flex;
  justify-content: center;
  padding: var(--spacing-xs);
  box-shadow: var(--shadow-lg);
}

.scroll-indicator__wheel {
  width: 4px;
  height: 8px;
  background-color: var(--color-white);
  border-radius: var(--radius-full);
  animation: scrollDown 1.5s infinite;
}

.scroll-indicator__text {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

@keyframes bounce {
  0%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(-10px);
  }
}

@keyframes scrollDown {
  0% {
    transform: translateY(0);
    opacity: 1;
  }
  100% {
    transform: translateY(15px);
    opacity: 0;
  }
}

/* ============================================
   Features Section
   ============================================ */
.features {
  background-color: var(--color-dark);
}

.feature {
  position: relative;
  padding: var(--spacing-3xl) 0;
  overflow: hidden;
}

.feature--purple {
  background: linear-gradient(to bottom, var(--color-dark), var(--color-dark), rgba(88, 28, 135, 0.2));
}

.feature--teal {
  background: linear-gradient(to bottom, var(--color-dark), var(--color-dark), rgba(17, 94, 89, 0.2));
}

.feature--blue {
  background: linear-gradient(to bottom, var(--color-dark), var(--color-dark), rgba(30, 58, 138, 0.2));
}

.feature__container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-2xl);
}

@media (min-width: 768px) {
  .feature__container {
    flex-direction: row;
  }

  .feature__container--reverse {
    flex-direction: row-reverse;
  }
}

.feature__content {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  text-align: center;
}

@media (min-width: 768px) {
  .feature__content {
    width: 50%;
    text-align: left;
  }
}

.feature__subtitle {
  color: var(--color-primary);
  font-weight: 700;
  letter-spacing: 0.1em;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
}

.feature__title {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.2;
}

@media (min-width: 768px) {
  .feature__title {
    font-size: var(--font-size-5xl);
  }
}

.feature__description {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-lg);
  line-height: 1.7;
  max-width: 32rem;
}

@media (min-width: 768px) {
  .feature__description {
    margin: 0;
  }
}

@media (max-width: 767px) {
  .feature__description {
    margin: 0 auto;
  }
}

.feature__button {
  margin-top: var(--spacing-lg);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--color-white);
  transition: all var(--transition-base);
  font-weight: 600;
  display: inline-block;
  align-self: center;
}

@media (min-width: 768px) {
  .feature__button {
    align-self: flex-start;
  }
}

.feature__button:hover {
  background-color: var(--color-white);
  color: var(--color-black);
}

.feature__image-wrapper {
  width: 100%;
  display: flex;
  justify-content: center;
}

@media (min-width: 768px) {
  .feature__image-wrapper {
    width: 50%;
  }
}

.feature__image-container {
  position: relative;
}

.feature__image-glow {
  position: absolute;
  inset: 0;
  background-color: rgba(35, 209, 174, 0.2);
  filter: blur(48px);
  border-radius: var(--radius-full);
  opacity: 0;
  transition: opacity 0.7s ease;
}

.feature__image-container:hover .feature__image-glow {
  opacity: 0.5;
}

.feature__image {
  position: relative;
  z-index: var(--z-dropdown);
  width: 280px;
  height: 500px;
  object-fit: cover;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  transform: rotate(3deg);
  transition: all 0.5s ease-out;
}

@media (min-width: 768px) {
  .feature__image {
    width: 320px;
    height: 600px;
  }
}

.feature__image-container:hover .feature__image {
  transform: rotate(0deg);
}

.feature__badge {
  position: absolute;
  z-index: var(--z-sticky);
  width: 6rem;
  height: 6rem;
  background-color: var(--color-secondary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-xl);
  animation: float 3s ease-in-out infinite;
}

.feature__badge--bottom-right {
  bottom: -1.5rem;
  right: -1.5rem;
}

.feature__badge--bottom-left {
  bottom: -1.5rem;
  left: -1.5rem;
}

.feature__badge-emoji {
  font-size: var(--font-size-3xl);
}

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

/* ============================================
   App Preview Section
   ============================================ */
.app-preview {
  padding: var(--spacing-3xl) 0;
  background-color: var(--color-dark);
  position: relative;
  overflow: hidden;
}

.app-preview__background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.2;
  background: radial-gradient(ellipse at top, rgba(88, 28, 135, 1), var(--color-dark), var(--color-dark));
  pointer-events: none;
}

.app-preview__container {
  position: relative;
  z-index: var(--z-dropdown);
  text-align: center;
}

.app-preview__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

@media (min-width: 768px) {
  .app-preview__title {
    font-size: var(--font-size-5xl);
  }
}

.app-preview__title-highlight {
  color: var(--color-secondary);
}

.app-preview__subtitle {
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: var(--spacing-2xl);
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
}

.app-preview__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
}

@media (min-width: 768px) {
  .app-preview__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
  }
}

.moment-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 9 / 16;
}

.moment-card:nth-child(odd) {
  transform: translateY(2rem);
}

.moment-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s ease;
}

.moment-card:hover .moment-card__image {
  transform: scale(1.1);
}

.moment-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--spacing-sm);
  text-align: left;
}

.moment-card:hover .moment-card__overlay {
  opacity: 1;
}

.moment-card__user {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-xs);
}

.moment-card__avatar {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
}

.moment-card__username {
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-white);
}

.moment-card__caption {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.8);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background-color: var(--color-black);
  color: rgba(255, 255, 255, 0.6);
  padding: var(--spacing-2xl) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__top {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

@media (min-width: 768px) {
  .footer__top {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer__top {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer__brand {
  grid-column: span 2;
}

@media (min-width: 1024px) {
  .footer__brand {
    grid-column: span 2;
  }
}

.footer__brand-title {
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
}

.footer__brand-logo {
  height: 40px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  filter: brightness(1);
  transition: filter var(--transition-base);
}

.footer__brand-logo:hover {
  filter: brightness(0.8);
}

.footer__brand-icon {
  width: 24px;
  height: 24px;
  background: linear-gradient(to top right, var(--color-secondary), var(--color-primary));
  border-radius: var(--radius-full);
}

.footer__brand-description {
  font-size: var(--font-size-sm);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
  max-width: 28rem;
}

.footer__social {
  display: flex;
  gap: var(--spacing-sm);
}

.footer__social-link {
  transition: color var(--transition-base);
}

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

.footer__column-title {
  color: var(--color-white);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.footer__link {
  transition: color var(--transition-base);
}

.footer__link:hover {
  color: var(--color-primary);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xs);
}

@media (min-width: 768px) {
  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer__bottom-right {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

@media (min-width: 768px) {
  .footer__bottom-right {
    flex-direction: row;
  }
}

.footer__language {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: pointer;
  transition: color var(--transition-base);
}

.footer__language:hover {
  color: var(--color-white);
}

/* ============================================
   Utility Classes
   ============================================ */
.hidden {
  display: none !important;
}

.fade-in {
  animation: fadeIn 0.3s ease-out forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Icon sizes */
.icon-sm {
  width: 16px;
  height: 16px;
}

.icon-md {
  width: 20px;
  height: 20px;
}

.icon-lg {
  width: 24px;
  height: 24px;
}

.icon-xl {
  width: 32px;
  height: 32px;
}