/* ==========================================================================
   ChatSpheres Brand CSS
   "Talk with purpose. Connect with heart."
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Brand Palette)
   NO WHITE OR OFF-WHITE - per brand guide
   -------------------------------------------------------------------------- */
:root {
  /* Primary Colors */
  --main-red: #e63946;
  --gold: #FFD166;
  --rose: #FFB6B9;
  --light-rose: #FCE2E5;
  --charcoal: #22223B;
  --bg-main: #FFE7DD;
  
  /* Semantic Colors */
  --color-primary: var(--gold);
  --color-primary-hover: var(--main-red);
  --color-secondary: var(--rose);
  --color-accent: var(--main-red);
  --color-text: var(--charcoal);
  --color-text-muted: rgba(34, 34, 59, 0.7);
  --color-background: var(--bg-main);
  --color-surface: var(--light-rose);
  --color-surface-elevated: var(--rose);
  
  /* Typography */
  --font-family: 'Nunito', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-weight-normal: 400;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Border Radius (pill-shaped per brand) */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 999px;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(34, 34, 59, 0.08);
  --shadow-md: 0 4px 16px rgba(34, 34, 59, 0.12);
  --shadow-lg: 0 8px 32px rgba(34, 34, 59, 0.16);
  --shadow-glow-gold: 0 4px 20px rgba(255, 209, 102, 0.4);
  --shadow-glow-red: 0 4px 20px rgba(230, 57, 70, 0.3);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;
  
  /* Z-index layers */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-tooltip: 600;
  --z-max: 9999;
  
  /* Header height */
  --header-height: 70px;
  --header-height-mobile: 60px;
}

/* --------------------------------------------------------------------------
   Reset & Base Styles
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-weight: var(--font-weight-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --------------------------------------------------------------------------
   Background Pattern (Vesica Piscis motif)
   -------------------------------------------------------------------------- */
.bg-pattern {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.bg-pattern::before {
  content: '';
  position: absolute;
  top: -15%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(230, 57, 70, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 20s ease-in-out infinite;
}

.bg-pattern::after {
  content: '';
  position: absolute;
  bottom: -15%;
  left: -10%;
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(255, 209, 102, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 25s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -20px) scale(1.05); }
}

/* --------------------------------------------------------------------------
   Header & Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--light-rose);
  border-bottom: 2px solid var(--rose);
  z-index: var(--z-fixed);
  display: flex;
  align-items: center;
  padding: 0 var(--space-lg);
  transition: box-shadow var(--transition-normal);
}

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

.header-container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--charcoal);
  flex-shrink: 0;
}

.site-logo svg {
  width: 44px;
  height: 44px;
  transition: transform var(--transition-normal);
}

.site-logo:hover svg {
  transform: scale(1.05);
}

.site-logo-text {
  font-size: 1.25rem;
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.02em;
  color: var(--charcoal);
}

/* Hamburger Menu Button */
.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: var(--gold);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  padding: 10px;
  gap: 5px;
  transition: background var(--transition-fast);
  z-index: calc(var(--z-fixed) + 10);
}

.menu-toggle:hover {
  background: var(--main-red);
}

.menu-toggle:hover .menu-bar {
  background: var(--light-rose);
}

.menu-bar {
  width: 22px;
  height: 3px;
  background: var(--charcoal);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* Hamburger animation */
.menu-toggle.active .menu-bar:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

.menu-toggle.active .menu-bar:nth-child(2) {
  opacity: 0;
  transform: translateX(-10px);
}

.menu-toggle.active .menu-bar:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* Navigation Menu (Slide-out) */
.nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(34, 34, 59, 0.6);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: var(--z-fixed);
}

.nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

.nav-menu {
  position: fixed;
  top: 0;
  left: 0 !important; /* Force LEFT side */
  right: auto !important; /* Never on right */
  width: 320px;
  max-width: 85vw;
  height: 100vh;
  background: var(--light-rose);
  padding: calc(var(--header-height) + var(--space-lg)) var(--space-lg) var(--space-lg);
  transform: translateX(-100%); /* Hidden - slides from LEFT */
  transition: transform var(--transition-normal), visibility 0s linear var(--transition-normal);
  z-index: calc(var(--z-fixed) + 5);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  visibility: hidden; /* Hidden by default */
}

.nav-menu.active {
  transform: translateX(0); /* Visible */
  visibility: visible; /* Show when active */
  transition: transform var(--transition-normal), visibility 0s linear 0s;
}

/* Nav Close Button - Enhanced for mobile touch */
.nav-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md); /* Keep close button on right side of sidebar */
  width: 48px;
  height: 48px;
  min-width: 48px; /* Ensure minimum touch target */
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--main-red);
  border: 3px solid white;
  border-radius: 50%;
  color: white;
  font-size: 1.75rem;
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  line-height: 1;
  transition: all var(--transition-fast);
  z-index: 1000010;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  -webkit-tap-highlight-color: transparent; /* Remove tap highlight on mobile */
  touch-action: manipulation; /* Faster touch response */
}

.nav-close:hover,
.nav-close:focus {
  background: var(--charcoal);
  color: white;
  transform: scale(1.1);
  outline: none;
}

.nav-close:active {
  transform: scale(0.95);
  background: var(--charcoal);
}

/* Even larger on mobile for easier tapping */
@media (max-width: 768px) {
  .nav-close {
    width: 52px;
    height: 52px;
    min-width: 52px;
    min-height: 52px;
    font-size: 2rem;
    top: var(--space-sm);
    right: var(--space-sm);
    border-width: 3px;
  }
}

/* Navigation Links */
.nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  list-style: none;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  color: var(--charcoal);
  text-decoration: none;
  font-weight: var(--font-weight-bold);
  font-size: 1rem;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  background: var(--rose);
  transform: translateX(4px);
}

.nav-link.active {
  background: var(--gold);
}

.nav-link-icon {
  font-size: 1.25rem;
  width: 28px;
  text-align: center;
}

/* Nav Divider */
.nav-divider {
  height: 2px;
  background: var(--rose);
  margin: var(--space-md) 0;
  border-radius: 1px;
}

/* User Section in Nav */
.nav-user-section {
  margin-top: auto;
  padding-top: var(--space-lg);
  border-top: 2px solid var(--rose);
}

.nav-user-info {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--rose);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
}

.nav-user-avatar {
  width: 48px;
  height: 48px;
  background: var(--gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--charcoal);
}

.nav-user-details {
  flex: 1;
  min-width: 0;
}

.nav-user-name {
  font-weight: var(--font-weight-bold);
  color: var(--charcoal);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-user-gems {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.875rem;
  color: var(--charcoal);
  opacity: 0.8;
}

/* Header Actions (shown inline on desktop) */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Header left side - menu and logo together */
.header-left {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header-gem-badge {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  background: var(--gold);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-bold);
  font-size: 0.875rem;
  color: var(--charcoal);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.header-gem-badge:hover {
  background: var(--main-red);
  color: var(--light-rose);
  transform: scale(1.05);
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.5rem;
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: var(--font-weight-bold);
  text-decoration: none;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* Primary Button (Gold -> Red on hover) */
.btn-primary {
  background: var(--gold);
  color: var(--charcoal);
  box-shadow: var(--shadow-glow-gold);
}

.btn-primary:hover:not(:disabled) {
  background: var(--main-red);
  color: var(--light-rose);
  box-shadow: var(--shadow-glow-red);
  transform: translateY(-2px);
}

/* Secondary Button */
.btn-secondary {
  background: var(--rose);
  color: var(--charcoal);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--main-red);
  color: var(--light-rose);
  transform: translateY(-2px);
}

/* Ghost Button */
.btn-ghost {
  background: transparent;
  color: var(--charcoal);
  border: 2px solid var(--rose);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--rose);
  border-color: var(--rose);
}

/* Danger Button */
.btn-danger {
  background: var(--main-red);
  color: var(--light-rose);
}

.btn-danger:hover:not(:disabled) {
  background: var(--charcoal);
  transform: translateY(-2px);
}

/* Button Sizes */
.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.btn-full {
  width: 100%;
}

/* Icon Button */
.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* --------------------------------------------------------------------------
   Tags / Chips
   -------------------------------------------------------------------------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.25rem 0.9rem;
  background: var(--gold);
  color: var(--charcoal);
  font-size: 0.85rem;
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.tag:hover {
  background: var(--main-red);
  color: var(--light-rose);
}

.tag-rose {
  background: var(--rose);
}

.tag-outline {
  background: transparent;
  border: 2px solid var(--gold);
}

.tag-outline:hover {
  background: var(--gold);
  color: var(--charcoal);
}

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.card {
  background: var(--light-rose);
  border: 3px solid var(--rose);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  transition: all var(--transition-normal);
}

.card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-featured {
  border-color: var(--gold);
  box-shadow: var(--shadow-glow-gold);
}

.card-header {
  margin-bottom: var(--space-md);
}

.card-title {
  font-size: 1.25rem;
  font-weight: var(--font-weight-extrabold);
  color: var(--charcoal);
  margin-bottom: var(--space-xs);
}

.card-body {
  color: var(--charcoal);
}

.card-footer {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 2px solid var(--rose);
}

/* --------------------------------------------------------------------------
   Form Elements
   -------------------------------------------------------------------------- */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: var(--font-weight-bold);
  color: var(--charcoal);
  margin-bottom: var(--space-xs);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: var(--font-family);
  font-size: 1rem;
  color: var(--charcoal);
  background: var(--light-rose);
  border: 2px solid var(--rose);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--charcoal);
  opacity: 0.5;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(255, 209, 102, 0.2);
}

.form-input:disabled,
.form-select:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

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

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width: 20px;
  height: 20px;
  accent-color: var(--main-red);
  cursor: pointer;
}

/* --------------------------------------------------------------------------
   Modals
   -------------------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(34, 34, 59, 0.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  z-index: var(--z-modal-backdrop);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--light-rose);
  border: 4px solid var(--gold);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  max-width: 480px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  transform: scale(0.9) translateY(20px);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}

.modal-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--rose);
  border: none;
  border-radius: 50%;
  color: var(--charcoal);
  font-size: 1.25rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--main-red);
  color: var(--light-rose);
  transform: rotate(90deg);
}

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

.modal-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-md);
  background: var(--gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.modal-title {
  font-size: 1.5rem;
  font-weight: var(--font-weight-extrabold);
  color: var(--charcoal);
  margin-bottom: var(--space-xs);
}

.modal-subtitle {
  color: var(--charcoal);
  opacity: 0.7;
  font-size: 0.95rem;
}

/* --------------------------------------------------------------------------
   Auth Modal (Sign In/Sign Up)
   -------------------------------------------------------------------------- */
.auth-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  background: rgba(34, 34, 59, 0.9);
  backdrop-filter: blur(8px);
}

.auth-modal.active {
  display: flex;
}

.auth-modal-content {
  background: var(--light-rose);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  max-width: 400px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  border: 4px solid var(--gold);
  position: relative;
  animation: scaleIn 0.3s ease-out;
}

.auth-modal-logo {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.auth-modal-logo svg {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-sm);
  display: block;
}

.auth-modal-logo h2 {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--charcoal);
  margin: 0;
}

.auth-modal-logo p {
  color: var(--charcoal);
  opacity: 0.7;
  font-size: 0.875rem;
  margin-top: var(--space-xs);
}

.auth-message {
  margin-bottom: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: var(--font-weight-semibold);
  text-align: center;
}

.auth-message.error {
  background: var(--main-red);
  color: var(--light-rose);
}

.auth-message.success {
  background: var(--gold);
  color: var(--charcoal);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.auth-divider {
  display: flex;
  align-items: center;
  margin: var(--space-lg) 0;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  border-top: 1px solid var(--rose);
}

.auth-divider span {
  padding: 0 var(--space-md);
  color: var(--charcoal);
  opacity: 0.6;
  font-size: 0.875rem;
}

.google-btn {
  width: 100%;
  padding: var(--space-md);
  background: var(--bg-main);
  border: 2px solid var(--rose);
  border-radius: var(--radius-lg);
  font-weight: var(--font-weight-semibold);
  font-family: var(--font-family);
  color: var(--charcoal);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  transition: all var(--transition-fast);
}

.google-btn:hover {
  background: var(--rose);
  border-color: var(--main-red);
}

.auth-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--rose);
  border: none;
  border-radius: 50%;
  color: var(--charcoal);
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  line-height: 1;
  transition: all var(--transition-fast);
}

.auth-close:hover {
  background: var(--main-red);
  color: var(--light-rose);
}

.auth-signup-link {
  text-align: center;
  margin-top: var(--space-lg);
  color: var(--charcoal);
  font-size: 0.875rem;
}

.auth-signup-link a {
  color: var(--main-red);
  font-weight: var(--font-weight-bold);
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   Page Layout
   -------------------------------------------------------------------------- */
.page-wrapper {
  min-height: 100vh;
  padding-top: var(--header-height);
  position: relative;
}

.page-content {
  position: relative;
  z-index: 1;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container-sm {
  max-width: 600px;
}

.container-lg {
  max-width: 1400px;
}

/* Section Spacing */
.section {
  padding: var(--space-2xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-title {
  font-size: 2rem;
  font-weight: var(--font-weight-extrabold);
  color: var(--charcoal);
  margin-bottom: var(--space-sm);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--charcoal);
  opacity: 0.7;
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.font-bold { font-weight: var(--font-weight-bold); }
.font-extrabold { font-weight: var(--font-weight-extrabold); }

.text-muted { opacity: 0.7; }
.text-red { color: var(--main-red); }
.text-gold { color: var(--gold); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

.hidden { display: none !important; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Spacing */
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  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 pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes glow {
  0%, 100% { box-shadow: var(--shadow-glow-gold); }
  50% { box-shadow: 0 4px 30px rgba(255, 209, 102, 0.6); }
}

.animate-fadeIn { animation: fadeIn 0.3s ease-out; }
.animate-fadeInUp { animation: fadeInUp 0.4s ease-out; }
.animate-fadeInDown { animation: fadeInDown 0.4s ease-out; }
.animate-scaleIn { animation: scaleIn 0.3s ease-out; }
.animate-pulse { animation: pulse 2s ease-in-out infinite; }
.animate-bounce { animation: bounce 1s ease-in-out infinite; }
.animate-spin { animation: spin 1s linear infinite; }
.animate-glow { animation: glow 2s ease-in-out infinite; }

/* --------------------------------------------------------------------------
   Loading Spinner
   -------------------------------------------------------------------------- */
.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--rose);
  border-top-color: var(--main-red);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-sm {
  width: 24px;
  height: 24px;
  border-width: 3px;
}

.spinner-lg {
  width: 56px;
  height: 56px;
  border-width: 5px;
}

/* --------------------------------------------------------------------------
   Toast Notifications
   -------------------------------------------------------------------------- */
.toast {
  position: fixed;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--charcoal);
  color: var(--light-rose);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-lg);
  font-weight: var(--font-weight-semibold);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-max);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.toast.active {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  visibility: visible;
}

.toast-success {
  background: var(--gold);
  color: var(--charcoal);
}

.toast-error {
  background: var(--main-red);
  color: var(--light-rose);
}

/* --------------------------------------------------------------------------
   Responsive Breakpoints
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  :root {
    --header-height: var(--header-height-mobile);
  }
  
  .container {
    padding: 0 var(--space-md);
  }
  
  .section-title {
    font-size: 1.5rem;
  }
  
  .site-logo-text {
    font-size: 1.1rem;
  }
  
  .modal {
    padding: var(--space-lg);
    margin: var(--space-sm);
  }
}

@media (max-width: 480px) {
  .btn {
    padding: 0.625rem 1.25rem;
    font-size: 0.9rem;
  }
  
  .btn-lg {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
  }
  
  .nav-menu {
    width: 100%;
    max-width: 100%;
  }
}