/* ========== CSS Variables - Material You Design Tokens ========== */
:root {
  /* Primary colors - Material You teal/cyan palette */
  --md-primary: #006874;
  --md-primary-container: #97f0ff;
  --md-on-primary: #ffffff;
  --md-on-primary-container: #001f24;

  /* Secondary colors */
  --md-secondary: #4a6267;
  --md-secondary-container: #cde7ec;
  --md-on-secondary: #ffffff;
  --md-on-secondary-container: #051f23;

  /* Tertiary colors (accent) */
  --md-tertiary: #525e7d;
  --md-tertiary-container: #dae2ff;
  --md-on-tertiary: #ffffff;
  --md-on-tertiary-container: #0e1b37;

  /* Surface colors */
  --md-surface: #f5fafb;
  --md-surface-dim: #d5dbdc;
  --md-surface-bright: #f5fafb;
  --md-surface-container-lowest: #ffffff;
  --md-surface-container-low: #eff5f5;
  --md-surface-container: #e9efef;
  --md-surface-container-high: #e3e9ea;
  --md-surface-container-highest: #dde4e4;

  /* Text colors */
  --md-on-surface: #171d1e;
  --md-on-surface-variant: #3f484a;
  --md-outline: #6f797b;
  --md-outline-variant: #bfc8ca;

  /* Error colors */
  --md-error: #ba1a1a;
  --md-error-container: #ffdad6;
  --md-on-error: #ffffff;
  --md-on-error-container: #410002;

  /* Elevation shadows */
  --md-elevation-1: 0 1px 3px 1px rgba(0, 0, 0, 0.15), 0 1px 2px rgba(0, 0, 0, 0.3);
  --md-elevation-2: 0 2px 6px 2px rgba(0, 0, 0, 0.15), 0 1px 2px rgba(0, 0, 0, 0.3);
  --md-elevation-3: 0 4px 8px 3px rgba(0, 0, 0, 0.15), 0 1px 3px rgba(0, 0, 0, 0.3);

  /* Transitions */
  --md-transition-standard: 0.2s cubic-bezier(0.2, 0, 0, 1);
  --md-transition-emphasized: 0.5s cubic-bezier(0.2, 0, 0, 1);

  /* Border radius */
  --md-radius-sm: 8px;
  --md-radius-md: 12px;
  --md-radius-lg: 16px;
  --md-radius-xl: 28px;
}

/* Dark theme */
[data-theme="dark"] {
  --md-primary: #4fd8eb;
  --md-primary-container: #004f58;
  --md-on-primary: #003640;
  --md-on-primary-container: #97f0ff;

  --md-secondary: #b1cbd0;
  --md-secondary-container: #334b50;
  --md-on-secondary: #1c3438;
  --md-on-secondary-container: #cde7ec;

  --md-tertiary: #bbc6ea;
  --md-tertiary-container: #3a4664;
  --md-on-tertiary: #25314d;
  --md-on-tertiary-container: #dae2ff;

  --md-surface: #0e1415;
  --md-surface-dim: #0e1415;
  --md-surface-bright: #343a3b;
  --md-surface-container-lowest: #090f10;
  --md-surface-container-low: #171d1e;
  --md-surface-container: #1b2122;
  --md-surface-container-high: #252b2c;
  --md-surface-container-highest: #303637;

  --md-on-surface: #dde4e4;
  --md-on-surface-variant: #bfc8ca;
  --md-outline: #899294;
  --md-outline-variant: #3f484a;

  --md-error: #ffb4ab;
  --md-error-container: #93000a;
  --md-on-error: #690005;
  --md-on-error-container: #ffdad6;
}

/* ========== Base Styles ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  font-family: 'Inter', 'Segoe UI', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--md-surface);
  color: var(--md-on-surface);
  min-height: 100vh;
  line-height: 1.5;
  transition: background-color var(--md-transition-standard), color var(--md-transition-standard);
}

/* ========== Layout ========== */
.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px;
}

/* ========== Header ========== */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--md-outline-variant);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--md-primary), var(--md-tertiary));
  border-radius: var(--md-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.logo-text h1 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--md-on-surface);
  letter-spacing: -0.02em;
}

.logo-text p {
  font-size: 0.875rem;
  color: var(--md-on-surface-variant);
}

.theme-toggle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: var(--md-surface-container-high);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--md-transition-standard), transform var(--md-transition-standard);
}

.theme-toggle:hover {
  background: var(--md-surface-container-highest);
  transform: scale(1.05);
}

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

.theme-icon {
  font-size: 1.25rem;
}

/* ========== Card ========== */
.card {
  background: var(--md-surface-container-low);
  border-radius: var(--md-radius-lg);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--md-elevation-1);
  transition: background-color var(--md-transition-standard), box-shadow var(--md-transition-standard);
}

.card:hover {
  box-shadow: var(--md-elevation-2);
}

.card-title {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--md-on-surface-variant);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ========== Input Fields ========== */
.input-field {
  width: 100%;
  padding: 16px;
  border: 2px solid var(--md-outline-variant);
  border-radius: var(--md-radius-md);
  background: var(--md-surface-container-lowest);
  color: var(--md-on-surface);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color var(--md-transition-standard), box-shadow var(--md-transition-standard);
  resize: vertical;
}

.input-field:focus {
  outline: none;
  border-color: var(--md-primary);
  box-shadow: 0 0 0 3px rgba(0, 104, 116, 0.15);
}

.input-field::placeholder {
  color: var(--md-outline);
}

.input-field.large {
  min-height: 56px;
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.9375rem;
}

/* ========== Result Container ========== */
.result-container {
  background: linear-gradient(135deg, #e8def8 0%, #d0bcff 100%);
  border-radius: var(--md-radius-lg);
  padding: 20px;
  margin-bottom: 20px;
  animation: slideIn 0.3s ease-out;
  border: 1px solid rgba(103, 80, 164, 0.2);
}

[data-theme="dark"] .result-container {
  background: linear-gradient(135deg, #332d41 0%, #4a4458 100%);
  border: 1px solid rgba(208, 188, 255, 0.15);
}

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

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

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.result-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: #4a4458;
  opacity: 0.9;
}

[data-theme="dark"] .result-label {
  color: #e8def8;
}

.platform-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: #6750a4;
  color: #ffffff;
  border-radius: var(--md-radius-xl);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

[data-theme="dark"] .platform-badge {
  background: #7965af;
  color: #ffffff;
}

.result-url {
  background: var(--md-surface-container-lowest);
  border-radius: var(--md-radius-md);
  padding: 16px;
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.9375rem;
  color: var(--md-on-surface);
  word-break: break-all;
  line-height: 1.6;
}

.result-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 12px;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--md-radius-xl);
  font-size: 0.875rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--md-transition-standard);
}

.btn-primary {
  background: #6750a4;
  color: #ffffff;
}

.btn-primary:hover {
  background: #7965af;
  box-shadow: var(--md-elevation-2);
  transform: translateY(-1px);
}

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

.btn-primary.copied {
  background: #22c55e;
}

[data-theme="dark"] .btn-primary {
  background: #7965af;
  color: #ffffff;
}

[data-theme="dark"] .btn-primary:hover {
  background: #9a85d0;
}

[data-theme="dark"] .btn-primary.copied {
  background: #22c55e;
  color: #ffffff;
}

.copy-icon {
  font-size: 1rem;
}

/* ========== Error Message ========== */
.error-message {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--md-error-container);
  color: var(--md-on-error-container);
  padding: 16px 20px;
  border-radius: var(--md-radius-md);
  margin-bottom: 20px;
  font-size: 0.9375rem;
  animation: shake 0.4s ease-out;
}

@keyframes shake {

  0%,
  100% {
    transform: translateX(0);
  }

  20%,
  60% {
    transform: translateX(-5px);
  }

  40%,
  80% {
    transform: translateX(5px);
  }
}

.error-icon {
  font-size: 1.25rem;
}

/* ========== Supported Platforms ========== */
.platforms-section {
  margin-top: 40px;
}

.section-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--md-on-surface);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.platform-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.platform-category h4 {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--md-on-surface-variant);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.platform-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.platform-tag {
  display: inline-block;
  padding: 4px 10px;
  background: var(--md-surface-container-high);
  color: var(--md-on-surface-variant);
  border-radius: var(--md-radius-sm);
  font-size: 0.75rem;
  transition: background-color var(--md-transition-standard), color var(--md-transition-standard);
}

.platform-tag:hover {
  background: var(--md-secondary-container);
  color: var(--md-on-secondary-container);
}

/* ========== Hidden State ========== */
.hidden {
  display: none !important;
}

/* ========== Footer ========== */
.footer {
  text-align: center;
  padding: 24px 0;
  margin-top: 40px;
  border-top: 1px solid var(--md-outline-variant);
  color: var(--md-on-surface-variant);
  font-size: 0.875rem;
}

.footer a {
  color: var(--md-primary);
  text-decoration: none;
  font-weight: 500;
}

.footer a:hover {
  text-decoration: underline;
}

/* ========== Responsive Design ========== */
@media (max-width: 600px) {
  .container {
    padding: 16px 12px;
  }

  .header {
    flex-wrap: wrap;
    gap: 16px;
  }

  .logo-text h1 {
    font-size: 1.25rem;
  }

  .card {
    padding: 16px;
  }

  .input-field {
    padding: 14px;
    font-size: 0.9375rem;
  }

  .result-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
}

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

/* ========== Scrollbar Styling ========== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--md-surface-container);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: var(--md-outline);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--md-on-surface-variant);
}