/* --- Глобальные переменные и общие стили в духе dashboard/server --- */
:root {
    --color-bg: #16181e;
    --color-surface: #20242c;
    --color-surface-light: #2c313a;
    --color-border: #3a404b;
    --color-text-primary: #f0f0f0;
    --color-text-secondary: #8a919f;
    --color-accent: #6c63ff;
    --color-accent-hover: #574fde;
    --color-success: #9e9f9e;
    --color-warning: #ffa726;
    --color-error: #ff6b6b;
    --border-radius: 12px;
    --transition-speed: 0.25s;
}

body {
    background: var(--color-bg);
    color: var(--color-text-primary);
}

.tw-header {
    background: rgba(22, 24, 30, 0.9);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-left { display: flex; align-items: center; gap: 2rem; }

.brand {
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--color-text-primary);
    text-decoration: none;
    user-select: none;
}
.brand span { color: var(--color-accent); }

.header-nav a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-speed);
}
.header-nav a:hover { color: var(--color-text-primary); }

.header-right { display: flex; align-items: center; gap: 1.5rem; }

.balance-display {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--color-surface);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}
.balance-display span:first-child { color: var(--color-text-secondary); font-size: 0.9rem; }
.balance-display span:last-child { color: var(--color-success); font-weight: 600; font-size: 1rem; }

.user-email { color: var(--color-text-secondary); font-size: 0.9rem; }

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-speed);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
.btn-ghost { background: transparent; color: var(--color-text-secondary); border: 1px solid var(--color-border); }
.btn-ghost:hover { background: var(--color-surface); color: var(--color-text-primary); border-color: var(--color-accent); }
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover { background: var(--color-accent-hover); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(108,99,255,0.3); }
.btn-lg { padding: 1rem 2rem; font-size: 1rem; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

/* --- Стили для страницы баланса --- */
.balance-main {
    padding: 3rem 0 5rem;
  }
  
  .balance-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--color-border);
  }
  
  .balance-icon {
    width: 64px;
    height: 64px;
    flex-shrink: 0;
    background-color: var(--color-surface-light);
    color: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .balance-icon svg {
    width: 32px;
    height: 32px;
  }
  
  .balance-header h1 {
    margin: 0;
    font-size: 2rem;
    font-weight: 800;
  }
  .current-balance {
    margin: 0;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-text-primary);
  }
  
  .payment-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  @media (min-width: 992px) {
    .payment-layout {
      grid-template-columns: 2fr 1fr;
      gap: 3rem;
    }
  }
  
  .payment-options h2, .payment-summary h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 1rem 0;
  }
  .section-description {
    color: var(--color-text-secondary);
    margin: 0 0 2rem 0;
    max-width: 500px;
  }

  /* Видимая простая ошибка с анимацией для оплаты */
  .payment-error {
      display: none;
      background: rgba(255, 107, 107, 0.1);
      border: 1px solid rgba(255, 107, 107, 0.35);
      color: var(--color-error);
      border-radius: var(--border-radius);
      padding: 0.875rem 1rem;
      margin: 0 0 1rem 0;
      font-weight: 600;
  }
  .payment-error.show { display: block; animation: fadeIn 0.2s ease-out; }
  .shake { animation: shake 0.4s ease; }
  @keyframes fadeIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: translateY(0); } }
  @keyframes shake {
      0% { transform: translateX(0); }
      25% { transform: translateX(-4px); }
      50% { transform: translateX(4px); }
      75% { transform: translateX(-3px); }
      100% { transform: translateX(0); }
  }

  /* --- Модалка деталей транзакции --- */
  .modal-overlay {
      position: fixed;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(0, 0, 0, 0.8);
      backdrop-filter: blur(8px);
      display: none;
      align-items: center;
      justify-content: center;
      z-index: 1000;
  }
  .modal-overlay.show { display: flex; animation: fadeIn 0.2s ease-out; }

  .modal-content.tx-modal {
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--border-radius);
      padding: 1.5rem;
      width: 90%;
      max-width: 520px;
      position: relative;
      box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
      animation: slideUp 0.25s ease-out;
  }
  .modal-close-btn {
      position: absolute;
      top: 1rem;
      right: 1rem;
      background: none;
      border: none;
      color: var(--color-text-secondary);
      font-size: 1.25rem;
      cursor: pointer;
      width: 32px; height: 32px; border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
  }
  .modal-close-btn:hover { background: var(--color-surface-light); color: var(--color-text-primary); }

  .tx-rows { display: flex; flex-direction: column; gap: 0.75rem; margin: 1rem 0 1.25rem; }
  .tx-row { display: grid; grid-template-columns: 1fr auto auto; gap: 0.75rem; align-items: center; padding: 0.75rem 1rem; background: var(--color-surface-light); border: 1px solid var(--color-border); border-radius: 10px; }
  .tx-row span { color: var(--color-text-secondary); }
  .tx-row strong { font-weight: 700; color: var(--color-text-primary); word-break: break-all; }
  .tx-row .btn-copy { padding: 0.5rem 0.75rem; }

  .tx-note { color: var(--color-text-secondary); font-size: 0.9rem; line-height: 1.5; background: rgba(255,255,255,0.02); border: 1px dashed var(--color-border); border-radius: 10px; padding: 0.75rem 1rem; }

  .tx-actions { display: flex; gap: 0.75rem; justify-content: flex-end; margin-top: 1rem; }

  @keyframes slideUp {
      from { opacity: 0; transform: translateY(12px) scale(0.98); }
      to { opacity: 1; transform: translateY(0) scale(1); }
  }

  /* --- Popup в стиле server (pause-popup) для оплаты --- */
  .pause-popup { position: fixed; inset: 0; display: none; align-items: center; justify-content: center; z-index: 1200; background: rgba(0,0,0,.5); }
  .pause-popup.show { display: flex; }
  .pause-content { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 12px; padding: 1.25rem; width: 90%; max-width: 520px; color: var(--color-text-primary); position: relative; box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5); }
  .pause-close-btn { position: absolute; top: .5rem; right: .5rem; background: transparent; border: none; color: var(--color-text-secondary); font-size: 1.5rem; cursor: pointer; width: 32px; height: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center; }
  .pause-close-btn:hover { background: var(--color-surface-light); color: var(--color-text-primary); }
  .pause-actions { display: flex; gap: .75rem; justify-content: flex-end; margin-top: 1rem; }
  .pause-btn { padding: .6rem 1rem; border-radius: 10px; border: 1px solid var(--color-border); background: var(--color-surface-light); color: var(--color-text-primary); cursor: pointer; }
  .pause-primary { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }
  .pause-secondary { background: var(--color-surface-light); }

  /* Прелоадер перед деталями транзакции */
  .tx-loading { display: flex; flex-direction: column; align-items: center; gap: .75rem; padding: 1.25rem 0; }
  .tx-spinner {
      width: 36px; height: 36px;
      border-radius: 50%;
      border: 3px solid var(--color-border);
      border-top-color: var(--color-accent);
      animation: spin 1s linear infinite;
  }
  @keyframes spin { from { transform: rotate(0); } to { transform: rotate(360deg); } }
  
  .topup-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
  }
  
  .topup-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
  }
  .topup-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
  }
  .topup-card.active {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px var(--color-accent);
  }
  
  .topup-card .amount {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin: 0 0 0.5rem 0;
  }
  .topup-card .discount {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-accent);
  }
  .best-value-badge {
    position: absolute;
    top: 0;
    right: 0;
    background-color: var(--color-accent);
    color: #fff;
    padding: 0.2rem 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 0 0 0 var(--border-radius);
  }
  
  /* Стили для произвольной суммы */
  .topup-card.custom-amount {
      padding: 1rem 1.5rem;
  }
  .custom-amount-label {
      font-size: 0.8rem;
      color: var(--color-text-secondary);
      margin-bottom: 0.5rem;
      display: block;
  }
  .custom-amount-input {
      width: 100%;
      background: transparent;
      border: none;
      color: var(--color-text-primary);
      font-size: 2rem;
      font-weight: 700;
      padding: 0;
      outline: none;
  }
  .custom-amount-input::placeholder {
      color: var(--color-text-secondary);
      opacity: 0.5;
  }
  
  /* Стили для выбора крипты */
  .payment-method-selector {
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
      margin-bottom: 2rem;
  }
  .payment-method {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
  }
  .payment-method:hover {
      border-color: var(--color-accent);
  }
  .payment-method.active {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px var(--color-accent);
  }
  .payment-method img {
    width: 24px;
    height: 24px;
  }
  .payment-method span {
    font-weight: 500;
  }
  
  #pay-btn {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
  }