/* ============================================
   Design Kit — CSS Custom Properties & Components
   Mobile-first, based on app design system
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');

:root {
  /* Primary */
  --color-primary: #FFDD64;
  --color-primary-hover: #F4CB3A;
  --color-primary-dark: #2D2B27;

  /* Secondary */
  --color-secondary: #BE84FF;
  --color-secondary-light: #A98AFF;
  --color-secondary-dark: #3A3552;
  --color-secondary-accent: #94A6E8;

  /* Neutral */
  --color-white: #FFFFFF;
  --color-white-70: rgba(255, 255, 255, 0.7);
  --color-neutral-dark: #211D2E;

  /* Background */
  --color-bg: #444653;
  --color-bg-medium: #2E2F36;
  --color-bg-dark: #1C1E2A;

  /* Typography */
  --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
  --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 */
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;

  /* Spacing */
  --space-xs: 0.25rem;   /* 4px */
  --space-sm: 0.5rem;    /* 8px */
  --space-md: 1rem;      /* 16px */
  --space-lg: 1.5rem;    /* 24px */
  --space-xl: 2rem;      /* 32px */
  --space-2xl: 2.5rem;   /* 40px */
  --space-3xl: 3rem;     /* 48px */

  /* Radius */
  --radius-button: 50px;
  --radius-card: 20px;
  --radius-input: 12px;
  --radius-badge: 8px;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow-primary: 0 0 20px rgba(255, 221, 100, 0.4);
  --shadow-glow-secondary: 0 0 20px rgba(190, 132, 255, 0.4);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

/* ============================================
   Base / Reset
   ============================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-normal);
  color: var(--color-white);
  background-color: var(--color-bg-dark);
  min-height: 100vh;
}

/* ============================================
   Typography
   ============================================ */

.dk-heading-1,
h1.dk {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-white);
  margin: 0 0 var(--space-md);
}

.dk-heading-2,
h2.dk {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-white);
  margin: 0 0 var(--space-md);
}

.dk-heading-3,
h3.dk {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-white);
  margin: 0 0 var(--space-sm);
}

.dk-heading-4,
h4.dk {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-normal);
  color: var(--color-white);
  margin: 0 0 var(--space-sm);
}

.dk-paragraph,
p.dk {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-relaxed);
  color: var(--color-white-70);
  margin: 0 0 var(--space-md);
}

.dk-caption {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-normal);
  color: var(--color-white-70);
  margin: 0;
}

@media (min-width: 768px) {
  .dk-heading-1, h1.dk { font-size: var(--font-size-4xl); }
  .dk-heading-2, h2.dk { font-size: var(--font-size-3xl); }
  .dk-heading-3, h3.dk { font-size: var(--font-size-2xl); }
  .dk-heading-4, h4.dk { font-size: var(--font-size-xl); }
}

/* ============================================
   Buttons
   ============================================ */

.dk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-family: var(--font-family);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-button);
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}

.dk-btn:active {
  transform: scale(0.98);
}

/* Sizes */
.dk-btn--sm {
  padding: 10px 18px;
  font-size: 1rem;
  min-height: 36px;
}

.dk-btn--md {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-base);
  min-height: 48px;
}

.dk-btn--lg {
  padding: var(--space-md) var(--space-2xl);
  font-size: var(--font-size-lg);
  min-height: 56px;
}

/* Primary */
.dk-btn--primary {
  background: var(--color-primary);
  color: var(--color-primary-dark);
}

.dk-btn--primary:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-glow-primary);
}

/* Secondary */
.dk-btn--secondary {
  background: var(--color-secondary);
  color: var(--color-white);
}

.dk-btn--secondary:hover {
  background: var(--color-secondary-light);
  box-shadow: var(--shadow-glow-secondary);
}

/* Outline */
.dk-btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.dk-btn--outline:hover {
  background: rgba(255, 221, 100, 0.15);
}

.dk-btn--outline-secondary {
  background: transparent;
  color: var(--color-secondary);
  border: 2px solid var(--color-secondary);
}

.dk-btn--outline-secondary:hover {
  background: rgba(190, 132, 255, 0.15);
}

/* Ghost */
.dk-btn--ghost {
  background: transparent;
  color: var(--color-white-70);
}

.dk-btn--ghost:hover {
  background: var(--color-bg);
  color: var(--color-white);
}

/* ============================================
   Forms (default: underline style, как в приложении)
   ============================================ */

.dk-form-group {
  margin-bottom: var(--space-xl);
}

/* Метка по умолчанию — над полем, приглушённый цвет */
.dk-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-regular);
  color: var(--color-white-70);
  margin-bottom: var(--space-xs);
  display: block;
}

/* Поля по умолчанию: только нижняя линия (стиль Support) */
.dk-input,
.dk-select {
  width: 100%;
  padding: var(--space-sm) 0 var(--space-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-white);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-white-70);
  border-radius: 0;
  transition: border-color var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}

.dk-input::placeholder {
  color: var(--color-white-70);
}

.dk-input:focus,
.dk-select:focus {
  outline: none;
  border-bottom-color: var(--color-primary);
  box-shadow: none;
}

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

.dk-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23FFFFFF' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0 center;
  padding-right: 2rem;
}

.dk-textarea {
  min-height: 80px;
  resize: vertical;
}

/* Вариант «бокс» — рамка со всех сторон (если понадобится) */
.dk-input--boxed,
.dk-select--boxed {
  padding: var(--space-md);
  background: var(--color-bg);
  border: 2px solid var(--color-bg-medium);
  border-radius: var(--radius-input);
  border-bottom: 2px solid var(--color-bg-medium);
}

.dk-input--boxed:focus,
.dk-select--boxed:focus {
  border-color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(255, 221, 100, 0.2);
}

.dk-label--boxed {
  font-weight: var(--font-weight-medium);
  color: var(--color-white);
}

.dk-textarea--boxed {
  min-height: 120px;
}

/* Checkbox */
.dk-checkbox-wrap {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  cursor: pointer;
  user-select: none;
}

.dk-checkbox {
  width: 22px;
  height: 22px;
  margin: 0;
  accent-color: var(--color-primary);
  cursor: pointer;
  flex-shrink: 0;
  margin-top: 2px;
}

.dk-checkbox-label {
  font-size: var(--font-size-sm);
  color: var(--color-white-70);
  line-height: var(--line-height-normal);
}

/* Radio */
.dk-radio-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  user-select: none;
}

.dk-radio {
  width: 20px;
  height: 20px;
  margin: 0;
  accent-color: var(--color-primary);
  cursor: pointer;
}

/* Send button (app style): yellow pill, dark circle + dark arrow on the left */
.dk-btn--send {
  width: 100%;
  justify-content: center;
  position: relative;
  padding-left: var(--space-2xl);
}

.dk-btn--send .dk-btn__arrow-wrap {
  position: absolute;
  left: var(--space-sm);
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-secondary-dark);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.dk-btn--send .dk-btn__arrow-wrap::after {
  content: '';
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--color-primary-dark);
  border-top: 2px solid var(--color-primary-dark);
  transform: rotate(45deg);
  margin-left: 2px;
}

/* Support screen header */
.dk-support-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) 0 var(--space-xl);
  gap: var(--space-md);
}

.dk-support-header__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin: 0;
}

.dk-btn--close {
  width: 40px;
  height: 40px;
  min-width: 40px;
  min-height: 40px;
  padding: 0;
  border-radius: 50%;
  background: var(--color-bg);
  color: var(--color-white);
  font-size: 1.25rem;
  line-height: 1;
  flex-shrink: 0;
}

.dk-btn--close:hover {
  background: var(--color-bg-medium);
}

/* ============================================
   Cards
   ============================================ */

.dk-card {
  background: var(--color-bg);
  border-radius: var(--radius-card);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

.dk-card:hover {
  box-shadow: var(--shadow-lg);
}

.dk-card--elevated {
  background: var(--color-bg-medium);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.dk-card--primary {
  background: linear-gradient(135deg, rgba(255, 221, 100, 0.15) 0%, rgba(244, 203, 58, 0.05) 100%);
  border: 1px solid rgba(255, 221, 100, 0.3);
}

.dk-card--secondary {
  background: linear-gradient(135deg, rgba(190, 132, 255, 0.15) 0%, rgba(169, 138, 255, 0.05) 100%);
  border: 1px solid rgba(190, 132, 255, 0.3);
}

.dk-card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin: 0 0 var(--space-sm);
}

.dk-card__body {
  font-size: var(--font-size-sm);
  color: var(--color-white-70);
  margin: 0;
  line-height: var(--line-height-relaxed);
}

.dk-card__media {
  width: 100%;
  height: auto;
  border-radius: var(--radius-input);
  margin-bottom: var(--space-md);
  object-fit: cover;
}

/* ============================================
   Badges
   ============================================ */

.dk-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  font-family: var(--font-family);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  border-radius: var(--radius-badge);
  white-space: nowrap;
}

.dk-badge--primary {
  background: rgba(255, 221, 100, 0.25);
  color: var(--color-primary);
}

.dk-badge--secondary {
  background: rgba(190, 132, 255, 0.25);
  color: var(--color-secondary-light);
}

.dk-badge--success {
  background: rgba(76, 175, 80, 0.25);
  color: #81C784;
}

.dk-badge--warning {
  background: rgba(255, 193, 7, 0.25);
  color: #FFD54F;
}

.dk-badge--neutral {
  background: var(--color-bg);
  color: var(--color-white-70);
}

.dk-badge--pill {
  border-radius: var(--radius-button);
  padding: var(--space-xs) var(--space-md);
}

/* ============================================
   Icons
   ============================================ */

.dk-icon {
  display: inline-block;
  width: 24px;
  height: 24px;
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  flex-shrink: 0;
}

.dk-icon--sm { width: 18px; height: 18px; }
.dk-icon--md { width: 24px; height: 24px; }
.dk-icon--lg { width: 32px; height: 32px; }

.dk-icon--wallet { background-image: url('../assets/icon-wallet.png'); }
.dk-icon--bank { background-image: url('../assets/icon-bank.png'); }
.dk-icon--dollars { background-image: url('../assets/icon-dollars.png'); }
.dk-icon--chips { background-image: url('../assets/icon-chips.png'); }
.dk-icon--money-bag { background-image: url('../assets/icon-money-bag.png'); }
.dk-icon--moneysafe { background-image: url('../assets/icon-moneysafe.png'); }
.dk-icon--unknown { background-image: url('../assets/icon-unknown.png'); }
.dk-icon--carma { background-image: url('../assets/carma-coin.svg'); }

/* ============================================
   Color palette (utility classes for showcase)
   ============================================ */

.dk-swatch {
  width: 100%;
  height: 64px;
  border-radius: var(--radius-input);
  margin-bottom: var(--space-sm);
  box-shadow: var(--shadow-sm);
}

.dk-swatch--primary { background: var(--color-primary); }
.dk-swatch--primary-hover { background: var(--color-primary-hover); }
.dk-swatch--primary-dark { background: var(--color-primary-dark); }
.dk-swatch--secondary { background: var(--color-secondary); }
.dk-swatch--secondary-light { background: var(--color-secondary-light); }
.dk-swatch--secondary-dark { background: var(--color-secondary-dark); }
.dk-swatch--secondary-accent { background: var(--color-secondary-accent); }
.dk-swatch--white { background: var(--color-white); }
.dk-swatch--white-70 { background: var(--color-white-70); }
.dk-swatch--neutral-dark { background: var(--color-neutral-dark); }
.dk-swatch--bg { background: var(--color-bg); }
.dk-swatch--bg-medium { background: var(--color-bg-medium); }
.dk-swatch--bg-dark { background: var(--color-bg-dark); }

/* ============================================
   Layout helpers
   ============================================ */

.dk-section {
  padding: var(--space-xl) 0;
}

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

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

.dk-grid {
  display: grid;
  gap: var(--space-lg);
}

.dk-grid--2 { grid-template-columns: 1fr; }
.dk-grid--3 { grid-template-columns: 1fr; }

@media (min-width: 480px) {
  .dk-grid--2 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 768px) {
  .dk-grid--3 { grid-template-columns: repeat(3, 1fr); }
}

.dk-flex {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
}

.dk-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.1);
  margin: var(--space-xl) 0;
  border: none;
}