/* CP Counter, restyled on the Prep Hub tokens (shared/hub.css). Same class names as before. */
:root {
  --bg: var(--hub-bg);
  --bg-card: var(--hub-surface);
  --bg-card-hover: var(--hub-surface);
  --panel: var(--hub-surface-2);
  --border: var(--hub-line);
  --border-focus: var(--hub-accent);
  --text-main: var(--hub-ink);
  --text-muted: var(--hub-ink-2);
  --text-dim: var(--hub-ink-3);

  /* Platform accent colors */
  --leetcode: #e8890c;
  --codeforces: #1e7fd6;
  --atcoder: #2f8fb0;
  --cses: #0f9d6b;

  /* Functional */
  --success: var(--hub-good);
  --danger: var(--hub-bad);
  --warning: var(--hub-warn);
  --radius-lg: 14px;
  --radius-md: var(--hub-radius);
  --radius-sm: var(--hub-radius-sm);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --leetcode: #ffa116; --codeforces: #4aa3ff; --atcoder: #3cc8f0; --cses: #34d399; }
}
:root[data-theme="dark"] { --leetcode: #ffa116; --codeforces: #4aa3ff; --atcoder: #3cc8f0; --cses: #34d399; }

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  font-family: var(--hub-sans);
  background: var(--bg);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.page-shell {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 28px 16px 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Header & Navigation */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--hub-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--hub-accent);
}

.brand-eyebrow {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--hub-accent);
  font-weight: 700;
}

.brand-title {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* Status badge */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-dim);
}

.status-local .status-dot { background: var(--warning); }
.status-cloud .status-dot { background: var(--success); }

.status-cloud {
  color: var(--success);
  border-color: color-mix(in srgb, var(--success) 35%, transparent);
  background: var(--hub-good-soft);
}

/* Icon button */
.icon-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.12s ease, color 0.12s ease;
}

.icon-btn:hover {
  background: var(--panel);
  color: var(--text-main);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 0.12s ease, border-color 0.12s ease, filter 0.12s ease;
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: var(--hub-accent);
  color: var(--hub-accent-ink);
}

.btn-primary:hover { filter: brightness(1.08); }

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-main);
  border-color: var(--border);
}

.btn-secondary:hover { background: var(--panel); }

.btn-github {
  background: var(--text-main);
  color: var(--bg);
}

.btn-github:hover { filter: brightness(1.15); }

.btn-sm {
  padding: 5px 12px;
  font-size: 0.775rem;
}

/* User profile bar */
.user-profile {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card);
  padding: 4px 6px 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
}

.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1.5px solid var(--hub-accent);
  object-fit: cover;
}

.user-info {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--text-main);
}

.user-gist-link {
  font-size: 0.68rem;
  color: var(--hub-accent);
  text-decoration: none;
  font-weight: 600;
}

.user-gist-link:hover { text-decoration: underline; }

/* Stats banner */
.stats-banner {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 28px;
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 20px;
  box-shadow: var(--hub-shadow);
}

.stat-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.stat-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 4px;
}

.stat-number {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--hub-accent);
  font-family: var(--hub-mono);
  line-height: 1;
}

.stat-number-sm {
  font-size: 1.35rem;
  font-weight: 700;
  font-family: var(--hub-mono);
  color: var(--text-main);
}

.stat-subtext {
  font-size: 0.85rem;
  color: var(--warning);
  font-weight: 600;
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
}

/* 4 Counters Grid */
.counter-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.counter-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--hub-shadow);
  transition: box-shadow 0.15s ease, border-color 0.15s ease;
}

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

/* Platform specific styling */
.card-leetcode { border-top: 3px solid var(--leetcode); }
.card-codeforces { border-top: 3px solid var(--codeforces); }
.card-atcoder { border-top: 3px solid var(--atcoder); }
.card-cses { border-top: 3px solid var(--cses); }

.leetcode-badge { background: color-mix(in srgb, var(--leetcode) 14%, transparent); color: var(--leetcode); }
.codeforces-badge { background: color-mix(in srgb, var(--codeforces) 14%, transparent); }
.atcoder-badge { background: color-mix(in srgb, var(--atcoder) 14%, transparent); color: var(--atcoder); }
.cses-badge { background: color-mix(in srgb, var(--cses) 14%, transparent); color: var(--cses); }

/* Card Header */
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.platform-badge {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.platform-title {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.2;
}

.platform-sub {
  font-size: 0.725rem;
  color: var(--text-dim);
}

.card-reset-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 1.2rem;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.card-reset-btn:hover {
  color: var(--text-main);
  background: var(--panel);
}

/* Counter Display / Number Input */
.counter-display {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 6px 0;
}

.counter-number-input {
  width: 100%;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 10px;
  font-family: var(--hub-mono);
  font-size: 3.1rem;
  font-weight: 800;
  text-align: center;
  color: var(--text-main);
  outline: none;
  -moz-appearance: textfield;
}

.counter-number-input::-webkit-outer-spin-button,
.counter-number-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.counter-number-input:hover { background: var(--panel); }

.counter-number-input:focus {
  background: var(--panel);
  border-color: var(--border-focus);
}

/* Main Controls (− and +) */
.controls-row {
  display: flex;
  gap: 10px;
}

.control-btn {
  flex: 1;
  height: 52px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-size: 1.75rem;
  font-weight: 700;
  font-family: inherit;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.1s ease, background-color 0.12s ease;
  user-select: none;
}

.control-btn:active { transform: scale(0.96); }

.control-dec {
  background: var(--hub-bad-soft);
  border-color: color-mix(in srgb, var(--danger) 25%, transparent);
  color: var(--danger);
}

.control-dec:hover { background: color-mix(in srgb, var(--danger) 18%, transparent); }

.control-inc {
  background: var(--hub-good-soft);
  border-color: color-mix(in srgb, var(--success) 25%, transparent);
  color: var(--success);
}

.control-inc:hover { background: color-mix(in srgb, var(--success) 20%, transparent); }

/* Quick Actions (+5, +10) */
.quick-actions {
  display: flex;
  gap: 8px;
}

.quick-btn {
  flex: 1;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-family: var(--hub-mono);
  font-size: 0.775rem;
  font-weight: 600;
  padding: 6px;
  cursor: pointer;
}

.quick-btn:hover {
  background: var(--panel);
  color: var(--text-main);
}

/* Footer */
.footer {
  text-align: center;
  padding: 16px;
  color: var(--text-dim);
  font-size: 0.8rem;
}

.footer strong { color: var(--text-muted); }

/* Modal Windows */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 12, 16, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 1000;
}

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  box-shadow: var(--hub-shadow-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-large { max-width: 620px; }

.modal-header {
  padding: 18px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}

.modal-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

.modal-close-btn:hover { color: var(--text-main); }

.modal-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.modal-scroll {
  max-height: 60vh;
  overflow-y: auto;
}

.modal-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-main);
}

.form-group input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-family: var(--hub-mono);
  font-size: 0.875rem;
  color: var(--text-main);
  outline: none;
}

.form-group input:focus {
  border-color: var(--hub-accent);
  box-shadow: 0 0 0 3px var(--hub-accent-soft);
}

.input-hint {
  font-size: 0.725rem;
  color: var(--text-dim);
  line-height: 1.4;
}

.input-hint code {
  color: var(--hub-accent);
  background: var(--hub-code-bg);
  padding: 1px 4px;
  border-radius: 3px;
}

.modal-footer {
  padding: 14px 22px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  border-top: 1px solid var(--border);
  background: var(--panel);
}

/* Help Steps */
.help-step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--hub-accent-soft);
  color: var(--hub-accent);
  font-weight: 700;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.step-content h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text-main);
}

.step-content p {
  font-size: 0.825rem;
  color: var(--text-muted);
}

.step-content code {
  background: var(--hub-code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.775rem;
  font-family: var(--hub-mono);
  color: var(--text-main);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--text-main);
  color: var(--bg);
  padding: 11px 18px;
  border-radius: var(--radius-md);
  box-shadow: var(--hub-shadow-lg);
  font-size: 0.875rem;
  font-weight: 500;
  z-index: 2000;
  animation: slideIn 0.2s ease-out;
}

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

.hidden { display: none !important; }

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .counter-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .page-shell { padding: 20px 16px; }

  .topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .header-actions { justify-content: space-between; }

  .counter-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .stats-banner {
    flex-direction: column;
    gap: 14px;
    padding: 16px;
  }

  .stat-divider {
    width: 80%;
    height: 1px;
  }

  .toast { left: 16px; right: 16px; }
}