/* 
 * APEX Mobile-First Design System
 * Base: 375px (iPhone standard)
 * Breakpoints: 768px (tablet), 1024px (desktop)
 */

:root {
  /* Colors */
  --color-primary: #FF6B35;
  --color-bg-dark: #0A0A0A;
  --color-bg-darker: #050505;
  --color-bg-card: #141414;
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #A0A0A0;
  --color-border: #2A2A2A;
  
  /* Spacing (Mobile-First) */
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  
  /* Typography (Mobile-First) */
  --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 */
  
  /* Bottom Nav Height */
  --bottom-nav-height: 64px;
  
  /* Safe Areas for iOS */
  --safe-area-bottom: env(safe-area-inset-bottom, 0px);
  --safe-area-top: env(safe-area-inset-top, 0px);
}

/* ========================================
   BASE MOBILE STYLES
======================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--color-bg-dark);
  color: var(--color-text-primary);
  line-height: 1.6;
  font-size: var(--font-size-base);
  overflow-x: hidden;
  padding-bottom: calc(var(--bottom-nav-height) + var(--safe-area-bottom));
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Images - Always Responsive */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ========================================
   MOBILE CONTAINER
======================================== */

.container {
  width: 100%;
  padding-left: var(--spacing-md);
  padding-right: var(--spacing-md);
  margin: 0 auto;
}

@media (min-width: 768px) {
  .container {
    max-width: 768px;
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: 1200px;
    padding-left: var(--spacing-xl);
    padding-right: var(--spacing-xl);
  }
}

/* ========================================
   BOTTOM TAB NAVIGATION
======================================== */

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(10, 10, 10, 0.98);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--color-border);
  z-index: 1000;
  padding-bottom: var(--safe-area-bottom);
}

.bottom-nav-container {
  display: flex;
  justify-content: space-around;
  align-items: center;
  height: var(--bottom-nav-height);
  max-width: 600px;
  margin: 0 auto;
}

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex: 1;
  text-decoration: none;
  color: var(--color-text-secondary);
  padding: var(--spacing-sm);
  transition: all 0.2s ease;
  position: relative;
  min-width: 60px;
  /* Button reset for More button */
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
}

.bottom-nav-item:active {
  transform: scale(0.95);
}

.bottom-nav-item.active {
  color: var(--color-primary);
}

.bottom-nav-icon {
  font-size: 24px;
  line-height: 1;
}

.bottom-nav-label {
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.bottom-nav-badge {
  position: absolute;
  top: 8px;
  right: 12px;
  background: var(--color-primary);
  color: white;
  font-size: 10px;
  font-weight: 700;
  min-width: 18px;
  height: 18px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}

/* Hide bottom nav on desktop */
@media (min-width: 1024px) {
  .bottom-nav {
    display: none;
  }
  
  body {
    padding-bottom: 0;
  }
}

/* ========================================
   MORE MENU OVERLAY
======================================== */

.more-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  z-index: 2000;
  display: none;
  align-items: flex-end;
  animation: fadeIn 0.2s ease;
}

.more-menu-overlay.active {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.more-menu {
  background: var(--color-bg-dark);
  width: 100%;
  max-height: 70vh;
  border-radius: 20px 20px 0 0;
  padding: var(--spacing-lg);
  padding-bottom: calc(var(--spacing-lg) + var(--safe-area-bottom));
  overflow-y: auto;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

.more-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.more-menu-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
}

.more-menu-close {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-text-primary);
  font-size: 24px;
  cursor: pointer;
  transition: all 0.2s;
}

.more-menu-close:active {
  transform: scale(0.95);
  background: var(--color-bg-darker);
}

.more-menu-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

@media (min-width: 375px) {
  .more-menu-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.more-menu-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  text-decoration: none;
  color: var(--color-text-primary);
  transition: all 0.2s;
}

.more-menu-item:active {
  transform: scale(0.95);
  background: var(--color-bg-darker);
}

.more-menu-item.active {
  border-color: var(--color-primary);
  background: rgba(255, 107, 53, 0.1);
}

.more-menu-icon {
  font-size: 32px;
  line-height: 1;
}

.more-menu-label {
  font-size: var(--font-size-xs);
  font-weight: 500;
  text-align: center;
}

.more-menu-section {
  margin-bottom: var(--spacing-lg);
}

.more-menu-section-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-sm);
}

.more-menu-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.more-menu-list-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  text-decoration: none;
  color: var(--color-text-primary);
  transition: all 0.2s;
}

.more-menu-list-item:active {
  transform: scale(0.98);
  background: var(--color-bg-darker);
}

.more-menu-list-item.active {
  border-color: var(--color-primary);
}

.more-menu-list-icon {
  font-size: 24px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-darker);
  border-radius: 8px;
  flex-shrink: 0;
}

.more-menu-list-content {
  flex: 1;
}

.more-menu-list-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: 2px;
}

.more-menu-list-subtitle {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.more-menu-list-badge {
  background: var(--color-primary);
  color: white;
  font-size: var(--font-size-xs);
  font-weight: 700;
  min-width: 20px;
  height: 20px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 6px;
}

/* ========================================
   MOBILE TOP HEADER
======================================== */

.mobile-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md);
  padding-top: calc(var(--spacing-md) + var(--safe-area-top));
}

.mobile-header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.mobile-logo {
  font-size: var(--font-size-2xl);
  font-weight: 900;
  letter-spacing: 0.05em;
  color: var(--color-text-primary);
  text-decoration: none;
  font-family: 'Playfair Display', serif;
}

.mobile-actions {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

/* Show mobile header on mobile, hide on desktop */
@media (min-width: 1024px) {
  .mobile-header {
    display: none;
  }
}

/* ========================================
   SECTIONS
======================================== */

.section {
  padding: var(--spacing-lg) 0;
}

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

@media (min-width: 1024px) {
  .section {
    padding: var(--spacing-2xl) 0;
  }
}

/* ========================================
   CARDS
======================================== */

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: var(--spacing-md);
  transition: all 0.2s ease;
}

@media (min-width: 768px) {
  .card {
    padding: var(--spacing-lg);
    border-radius: 16px;
  }
}

.card:active {
  transform: scale(0.98);
}

@media (min-width: 1024px) {
  .card:hover {
    transform: translateY(-2px);
    border-color: var(--color-primary);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  }
  
  .card:active {
    transform: scale(1);
  }
}

/* ========================================
   GRIDS - MOBILE-FIRST
======================================== */

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

@media (min-width: 768px) {
  .grid-md-2 {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }
}

@media (min-width: 1024px) {
  .grid-lg-3 {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
  }
  
  .grid-lg-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ========================================
   HORIZONTAL SCROLL CHIPS
======================================== */

.chip-scroll {
  display: flex;
  gap: var(--spacing-sm);
  overflow-x: auto;
  overflow-y: hidden;
  padding: var(--spacing-xs) 0;
  margin: 0 calc(var(--spacing-md) * -1);
  padding-left: var(--spacing-md);
  padding-right: var(--spacing-md);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.chip-scroll::-webkit-scrollbar {
  display: none;
}

.chip {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: 500;
  white-space: nowrap;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.chip:active {
  transform: scale(0.95);
}

.chip.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

@media (min-width: 1024px) {
  .chip:hover {
    background: var(--color-bg-darker);
    border-color: var(--color-text-secondary);
  }
  
  .chip.active:hover {
    background: #FF7F4D;
  }
}

/* ========================================
   BUTTONS - MOBILE-FIRST
======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: 8px;
  font-weight: 600;
  font-size: var(--font-size-base);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 44px; /* iOS touch target */
  text-align: center;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
}

.btn-icon {
  padding: var(--spacing-sm);
  min-width: 44px;
  min-height: 44px;
  border-radius: 50%;
}

.btn-full {
  width: 100%;
}

@media (min-width: 1024px) {
  .btn:hover {
    transform: translateY(-1px);
  }
  
  .btn-primary:hover {
    background: #FF7F4D;
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.4);
  }
  
  .btn-ghost:hover {
    background: var(--color-bg-card);
    border-color: var(--color-text-secondary);
  }
}

/* ========================================
   TYPOGRAPHY - MOBILE-FIRST
======================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-3xl);
  font-family: 'Playfair Display', serif;
}

h2 {
  font-size: var(--font-size-2xl);
}

h3 {
  font-size: var(--font-size-xl);
}

h4 {
  font-size: var(--font-size-lg);
}

p {
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

@media (min-width: 768px) {
  h1 {
    font-size: var(--font-size-4xl);
  }
  
  h2 {
    font-size: var(--font-size-3xl);
  }
}

@media (min-width: 1024px) {
  h1 {
    font-size: 3.5rem;
  }
}

/* ========================================
   UTILITY CLASSES
======================================== */

.hide-mobile {
  display: none;
}

@media (min-width: 768px) {
  .hide-mobile {
    display: block;
  }
  
  .hide-tablet {
    display: none;
  }
}

@media (min-width: 1024px) {
  .hide-desktop {
    display: none;
  }
  
  .hide-tablet {
    display: block;
  }
}

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

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

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

/* ========================================
   LOADING STATES
======================================== */

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-card) 0%,
    #1a1a1a 50%,
    var(--color-bg-card) 100%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* ========================================
   TOUCH FEEDBACK
======================================== */

.touchable {
  position: relative;
  overflow: hidden;
}

.touchable::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  transform: translate(-50%, -50%);
  transition: width 0.3s, height 0.3s;
}

.touchable:active::after {
  width: 300px;
  height: 300px;
}