:root {
  --bg: #0f0f12;
  --bg-card: #18181c;
  --border: #2a2a30;
  --text: #e4e4e7;
  --text-muted: #a1a1aa;
  --primary: #6366f1;
  --primary-hover: #818cf8;
  --error: #f87171;
  --success: #4ade80;
  --radius: 12px;
  --font: "DM Sans", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-size: 16px;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}

.page {
  max-width: 620px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.header {
  margin-bottom: 2rem;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0 0 1rem;
}

.site-logo {
  flex-shrink: 0;
  width: 120px;
  height: auto;
  display: block;
}

.header-text {
  flex: 1;
  min-width: 0;
}

.site-title {
  margin: 0 0 0.35rem;
  font-size: 1.35rem;
  font-weight: 700;
}

.site-title-icon {
  color: var(--primary);
  font-size: 1.4rem;
}

.site-desc {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

@media (max-width: 480px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .site-logo {
    width: 100px;
  }
}

/* Main */
.main {
  flex: 1;
}

.section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
}

.section-title {
  margin: 0 0 0.35rem;
  font-size: 1.2rem;
  font-weight: 600;
}

.section-desc {
  margin: 0 0 1.25rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.section-remaining {
  margin: 0 0 1rem;
  font-size: 0.9rem;
  color: var(--primary);
}

.section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.35rem;
}

.section-head .section-title {
  margin: 0;
}

/* Forms */
.form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-auth .input {
  max-width: 340px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.label {
  font-size: 0.875rem;
  font-weight: 500;
}

.input {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-family: var(--font);
  font-size: 1rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.input-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23a1a1aa' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2.25rem;
}

.hint {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

@media (max-width: 520px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.form-actions {
  margin-top: 0.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 500;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

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

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
}

.btn-primary:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.btn-large {
  padding: 0.75rem 1.5rem;
  font-size: 1.05rem;
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.btn-ghost:hover {
  color: var(--text);
}

.btn .btn-busy {
  display: none;
}

.btn.is-loading .btn-label {
  display: none;
}

.btn.is-loading .btn-busy {
  display: inline;
}

/* Messages */
.message {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
}

.message-error {
  background: rgba(248, 113, 113, 0.12);
  color: var(--error);
  border: 1px solid rgba(248, 113, 113, 0.25);
}

.message-success {
  background: rgba(74, 222, 128, 0.12);
  color: var(--success);
  border: 1px solid rgba(74, 222, 128, 0.25);
}

/* Footer */
.footer {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer p {
  margin: 0;
}