/* ========================================
   CSS Variables & Reset
   ======================================== */
:root {
  /* Colors */
  --bg-primary: #050505;
  --bg-secondary: #0a0a0a;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.6);
  --text-muted: rgba(255, 255, 255, 0.4);
  --accent: rgba(255, 255, 255, 0.1);
  --accent-hover: rgba(255, 255, 255, 0.15);
  --danger: rgba(255, 80, 80, 0.8);
  --danger-hover: rgba(255, 60, 60, 0.9);
  --glow: rgba(255, 255, 255, 0.05);
  --admin-glow: rgba(100, 180, 255, 0.15);

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;

  /* 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 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 50%;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(255, 255, 255, 0.03);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

/* ========================================
   Glass Card Base
   ======================================== */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.glass-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary);
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
}

.btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0) scale(0.98);
}

.btn:focus-visible {
  outline: 2px solid var(--text-primary);
  outline-offset: 2px;
}

.btn-danger {
  background: var(--danger);
  border-color: var(--danger);
}

.btn-danger:hover {
  background: var(--danger-hover);
  border-color: var(--danger-hover);
}

.btn-full {
  width: 100%;
}

.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-xs);
}

/* ========================================
   Loading Screen
   ======================================== */
.loader {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  z-index: 9999;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-spinner {
  width: 40px;
  height: 40px;
  border: 2px solid var(--border-color);
  border-top-color: var(--text-primary);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

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

/* ========================================
   Toast Notification
   ======================================== */
.toast {
  position: fixed;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: var(--space-md) var(--space-xl);
  background: rgba(20, 20, 20, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  z-index: 1000;
  opacity: 0;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-lg);
}

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

/* ========================================
   Dialog Overlay (Shared)
   ======================================== */
.dialog-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1001;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  padding: var(--space-md);
}

.dialog-overlay.show {
  opacity: 1;
  visibility: visible;
}

.dialog-box {
  background: rgba(20, 20, 20, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  max-width: 400px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  transform: scale(0.9);
  transition: transform var(--transition-base);
}

.dialog-overlay.show .dialog-box {
  transform: scale(1);
}

.dialog-box h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
}

.dialog-box p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-lg);
}

.dialog-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: flex-end;
  margin-top: var(--space-lg);
}

/* ========================================
   Container
   ======================================== */
.container {
  max-width: 680px;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
  min-height: 100vh;
}

/* ========================================
   Admin Mode Badge
   ======================================== */
.admin-badge {
  position: fixed;
  top: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: rgba(100, 180, 255, 0.1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(100, 180, 255, 0.3);
  border-radius: var(--radius-xl);
  color: rgba(100, 180, 255, 0.9);
  font-size: var(--font-size-sm);
  font-weight: 500;
  z-index: 200;
  animation: fadeInDown 0.3s ease forwards;
}

.admin-badge[hidden] {
  display: none;
}

.admin-badge-icon {
  width: 16px;
  height: 16px;
}

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

/* ========================================
   Profile Section
   ======================================== */
.profile-section {
  margin-bottom: var(--space-3xl);
}

.profile-card {
  padding: var(--space-3xl) var(--space-xl);
  text-align: center;
  animation: fadeInUp 0.6s ease forwards;
}

.profile-image-wrapper {
  position: relative;
  width: 120px;
  height: 120px;
  margin: 0 auto var(--space-xl);
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 2px solid var(--border-color);
  background: var(--bg-secondary);
  box-shadow: var(--shadow-md), 0 0 60px rgba(255, 255, 255, 0.03);
  cursor: pointer;
  transition: all var(--transition-base);
}

.profile-image-wrapper:hover {
  border-color: var(--border-hover);
}

.profile-image-wrapper:focus-visible {
  outline: 2px solid var(--text-primary);
  outline-offset: 4px;
}

/* Admin mode indicator on profile */
body.admin-mode .profile-image-wrapper {
  border-color: rgba(100, 180, 255, 0.4);
  box-shadow: var(--shadow-md), 0 0 30px var(--admin-glow);
}

.profile-admin-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(100, 180, 255, 0.2);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.profile-admin-overlay svg {
  width: 32px;
  height: 32px;
  color: white;
}

.profile-image-wrapper:hover .profile-admin-overlay {
  opacity: 1;
}

.profile-admin-overlay[hidden] {
  display: none;
}

.profile-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile-name {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
  background: linear-gradient(135deg, var(--text-primary) 0%, rgba(255, 255, 255, 0.7) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.profile-bio {
  color: var(--text-secondary);
  font-size: var(--font-size-base);
  max-width: 400px;
  margin: 0 auto;
}

/* ========================================
   Search Section
   ======================================== */
.search-section {
  margin-bottom: var(--space-xl);
  animation: fadeInUp 0.6s ease 0.1s forwards;
  opacity: 0;
}

.search-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
}

.search-icon {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.search-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
}

.search-input::placeholder {
  color: var(--text-muted);
}

.search-input:focus {
  outline: none;
}

/* ========================================
   Links Section
   ======================================== */
.links-section {
  margin-bottom: var(--space-xl);
  animation: fadeInUp 0.6s ease 0.2s forwards;
  opacity: 0;
}

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

/* Link Card - User Mode */
.link-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-lg) var(--space-xl);
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-base);
  animation: fadeInUp 0.4s ease forwards;
  opacity: 0;
  overflow: hidden;
}

.link-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.link-card:hover {
  transform: translateY(-2px) scale(1.01);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

.link-card:hover::before {
  opacity: 1;
}

.link-card:focus-visible {
  outline: 2px solid var(--text-primary);
  outline-offset: 2px;
}

.link-card:active {
  transform: translateY(0) scale(0.99);
}

.link-title {
  font-size: var(--font-size-lg);
  font-weight: 500;
  color: var(--text-primary);
}

.link-description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.link-arrow {
  position: absolute;
  right: var(--space-xl);
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: all var(--transition-base);
}

.link-card:hover .link-arrow {
  color: var(--text-primary);
  transform: translateY(-50%) translateX(4px);
}

/* Link Card Content (anchor inside card) */
.link-card-content {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  flex: 1;
}

/* Link Card - Admin Mode */
body.admin-mode .link-card {
  cursor: default;
  padding-right: var(--space-3xl);
}

body.admin-mode .link-card:hover {
  transform: none;
}

body.admin-mode .link-card .link-arrow {
  display: none;
}

/* Admin Edit Controls on Link Cards */
.link-admin-controls {
  position: absolute;
  right: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  gap: var(--space-xs);
  opacity: 0;
  transition: opacity var(--transition-base);
}

body.admin-mode .link-admin-controls {
  opacity: 1;
}

.link-admin-controls[hidden] {
  display: none;
}

.link-admin-controls .btn {
  width: 32px;
  height: 32px;
  padding: 0;
  border-radius: var(--radius-sm);
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-3xl);
  text-align: center;
}

.empty-state.hidden {
  display: none;
}

.empty-icon {
  width: 64px;
  height: 64px;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

.empty-state p {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.empty-state span {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

/* ========================================
   Admin Panel
   ======================================== */
.admin-panel {
  margin-top: var(--space-2xl);
  padding: var(--space-2xl);
  animation: fadeInUp 0.4s ease forwards;
}

.admin-panel[hidden] {
  display: none;
}

.admin-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-2xl);
  text-align: center;
}

.admin-section {
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid var(--border-color);
}

.admin-section:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.admin-section-title {
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.section-icon {
  width: 18px;
  height: 18px;
}

/* Form Styles */
.admin-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  position: relative;
}

.form-group label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: 500;
}

.form-input {
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-input:focus {
  outline: none;
  border-color: var(--border-hover);
  background: rgba(255, 255, 255, 0.05);
}

.form-input.error {
  border-color: var(--danger);
}

.form-help {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.char-counter {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  text-align: right;
}

.form-actions {
  display: flex;
  gap: var(--space-md);
}

/* ========================================
   Image Upload Area
   ======================================== */
.image-upload-area {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  background: rgba(255, 255, 255, 0.02);
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  min-height: 120px;
  overflow: hidden;
}

.image-upload-area:hover {
  border-color: var(--border-hover);
  background: rgba(255, 255, 255, 0.04);
}

.image-upload-area.dragover {
  border-color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.06);
}

.image-upload-area:focus-visible {
  outline: 2px solid var(--text-primary);
  outline-offset: 2px;
}

.image-preview {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  object-fit: cover;
  display: none;
  border: 2px solid var(--border-color);
}

.image-preview.visible {
  display: block;
}

.image-upload-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

.image-preview.visible ~ .image-upload-placeholder {
  display: none;
}

.upload-icon {
  width: 32px;
  height: 32px;
  margin-bottom: var(--space-xs);
}

.upload-hint {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  opacity: 0.7;
}

.image-or-divider {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  width: 100%;
  margin: var(--space-sm) 0;
  color: var(--text-muted);
  font-size: var(--font-size-xs);
}

.image-or-divider::before,
.image-or-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-color);
}

/* Admin Links List */
.admin-links-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.admin-link-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.admin-link-item:hover {
  border-color: var(--border-hover);
}

.admin-link-info {
  flex: 1;
  min-width: 0;
}

.admin-link-title {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.admin-link-url {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.admin-link-actions {
  display: flex;
  gap: var(--space-xs);
  flex-shrink: 0;
}

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

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

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
  .container {
    padding: var(--space-xl) var(--space-md);
  }

  .profile-card {
    padding: var(--space-2xl) var(--space-lg);
  }

  .profile-image-wrapper {
    width: 100px;
    height: 100px;
  }

  .profile-name {
    font-size: var(--font-size-xl);
  }

  .admin-panel {
    padding: var(--space-lg);
  }

  .link-card {
    padding: var(--space-md) var(--space-lg);
  }

  .admin-badge {
    top: var(--space-md);
    font-size: var(--font-size-xs);
    padding: var(--space-xs) var(--space-sm);
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-2xl: 1.75rem;
    --font-size-xl: 1.25rem;
  }

  .container {
    padding: var(--space-lg) var(--space-md);
  }

  .profile-card {
    padding: var(--space-xl) var(--space-md);
  }

  .profile-image-wrapper {
    width: 80px;
    height: 80px;
  }

  .admin-badge span:not(.admin-badge-icon) {
    display: none;
  }

  .admin-link-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .admin-link-actions {
    width: 100%;
    justify-content: flex-end;
  }

  .dialog-box {
    padding: var(--space-lg);
    margin: var(--space-md);
  }

  .form-actions {
    flex-direction: column;
  }
}

/* ========================================
   Focus Styles (Accessibility)
   ======================================== */
:focus-visible {
  outline: 2px solid var(--text-primary);
  outline-offset: 2px;
}

/* ========================================
   Scrollbar Styling
   ======================================== */
::-webkit-scrollbar {
  width: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}

/* ========================================
   Selection Styling
   ======================================== */
::selection {
  background: rgba(255, 255, 255, 0.2);
  color: var(--text-primary);
}