/* ================================================
   EquilibrIA - Dark Blue Premium Design
   ================================================ */

:root {
  --bg-deep: #060d1a;
  --bg-base: #0a1628;
  --bg-mid: #0d1f38;
  --bg-glass: rgba(255, 255, 255, 0.04);
  --bg-glass-hover: rgba(255, 255, 255, 0.07);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(79, 172, 254, 0.3);

  --accent-1: #4facfe;
  --accent-2: #00f2fe;
  --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);

  --text-primary: #e8f0fe;
  --text-secondary: rgba(232, 240, 254, 0.6);
  --text-muted: rgba(232, 240, 254, 0.35);

  --up-color: #ff6b6b;
  --down-color: #51cf66;
  --neutral-color: #74c0fc;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 100px;

  --shadow-glass: 0 8px 32px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.06);

  --blur-glass: blur(20px);

  --font-main: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --transition-fast: 150ms cubic-bezier(0.4,0,0.2,1);
  --transition-smooth: 300ms cubic-bezier(0.4,0,0.2,1);
  --transition-spring: 500ms cubic-bezier(0.34,1.56,0.64,1);
}

/* ========= Light Theme ========= */
[data-theme="light"] {
  --bg-deep: #e8f0fe;
  --bg-base: #dce8fb;
  --bg-mid: #cfddf8;
  --bg-glass: rgba(255, 255, 255, 0.55);
  --bg-glass-hover: rgba(255, 255, 255, 0.75);
  --border-glass: rgba(79, 172, 254, 0.2);
  --border-glow: rgba(79, 172, 254, 0.5);

  --text-primary: #0d1f38;
  --text-secondary: rgba(13, 31, 56, 0.65);
  --text-muted: rgba(13, 31, 56, 0.4);

  --up-color: #d63031;
  --down-color: #00b894;
  --neutral-color: #0984e3;
}

[data-theme="light"] .bg-mesh {
  background:
    radial-gradient(ellipse 80% 60% at 20% 0%, rgba(79,172,254,0.15) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 80% 100%, rgba(0,242,254,0.1) 0%, transparent 60%),
    linear-gradient(180deg, #e8f0fe 0%, #dce8fb 50%, #e8f0fe 100%);
}

[data-theme="light"] .bg-orb-1 { background: rgba(79,172,254,0.12); }
[data-theme="light"] .bg-orb-2 { background: rgba(0,242,254,0.08); }
[data-theme="light"] .bg-orb-3 { background: rgba(79,172,254,0.1); }

[data-theme="light"] .bottom-nav-pill {
  background: rgba(220, 232, 251, 0.9);
  border-color: rgba(79,172,254,0.3);
  box-shadow: 0 8px 40px rgba(79,172,254,0.15), 0 0 0 1px rgba(255,255,255,0.6) inset;
}

[data-theme="light"] .hero-section {
  background: linear-gradient(135deg, rgba(79,172,254,0.15) 0%, rgba(0,242,254,0.08) 100%);
  border-color: rgba(79,172,254,0.3);
}

[data-theme="light"] .chart-section,
[data-theme="light"] .metric-card,
[data-theme="light"] .modal .glass,
[data-theme="light"] .glass {
  background: rgba(255,255,255,0.55);
  border-color: rgba(79,172,254,0.18);
  box-shadow: 0 4px 24px rgba(79,172,254,0.1), inset 0 1px 0 rgba(255,255,255,0.8);
}

[data-theme="light"] .tabs-row { background: rgba(79,172,254,0.08); }
[data-theme="light"] .form-input { background: rgba(255,255,255,0.7); color: var(--text-primary); }
[data-theme="light"] .form-input::placeholder { color: var(--text-muted); }
[data-theme="light"] .history-item { background: rgba(255,255,255,0.5); }
[data-theme="light"] .stepper-btn { background: rgba(255,255,255,0.5); }
[data-theme="light"] .nav-btn { background: rgba(255,255,255,0.4); }
[data-theme="light"] .btn-secondary { border-color: rgba(79,172,254,0.3); color: var(--text-secondary); }
[data-theme="light"] .toast { background: rgba(220,232,251,0.96); }
[data-theme="light"] .cw-value {
  background: linear-gradient(135deg, #003d8f 0%, #005fb3 100%) !important;
  -webkit-background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  background-clip: text !important;
}
[data-theme="light"] .cw-unit { color: #005fb3; }
[data-theme="light"] .cw-label { color: #0070c8; }


/* ========= Theme button icons ========= */
.icon-moon { display: none; }
.icon-sun  { display: block; }

[data-theme="light"] .icon-sun  { display: none; }
[data-theme="light"] .icon-moon { display: block; }


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

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

body {
  font-family: var(--font-main);
  background: var(--bg-deep);
  color: var(--text-primary);
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ========= Background ========= */
.bg-mesh {
  position: fixed; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 0%, rgba(79,172,254,0.07) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 80% 100%, rgba(0,242,254,0.05) 0%, transparent 60%),
    linear-gradient(180deg, #060d1a 0%, #0a1628 50%, #060d1a 100%);
  pointer-events: none; z-index: 0;
}

.bg-orb {
  position: fixed; border-radius: 50%;
  filter: blur(80px); pointer-events: none; z-index: 0;
  animation: orbFloat 20s ease-in-out infinite;
}
.bg-orb-1 { width: 400px; height: 400px; background: rgba(79,172,254,0.06); top: -100px; left: -100px; animation-delay: 0s; }
.bg-orb-2 { width: 300px; height: 300px; background: rgba(0,242,254,0.04); bottom: 10%; right: -80px; animation-delay: -7s; }
.bg-orb-3 { width: 200px; height: 200px; background: rgba(79,172,254,0.05); top: 40%; left: 30%; animation-delay: -14s; }

@keyframes orbFloat {
  0%,100% { transform: translate(0,0) scale(1); }
  33% { transform: translate(30px,-20px) scale(1.05); }
  66% { transform: translate(-20px,30px) scale(0.95); }
}

/* ========= Glass ========= */
.glass {
  background: var(--bg-glass);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-glass);
}

/* ========= App ========= */
.app {
  position: relative; z-index: 1;
  max-width: 540px; margin: 0 auto;
  padding: 0 0 108px;
  min-height: 100vh; min-height: 100dvh;
}

/* ========= Main ========= */
.main {
  padding: 16px 16px 0;
  display: flex; flex-direction: column; gap: 12px;
}

/* ========= Chart Section ========= */
.chart-section {
  border-radius: var(--radius-lg);
  padding: 18px 18px 14px;
  overflow: hidden;
}

.period-tabs {
  display: flex; flex-direction: column; gap: 10px; margin-bottom: 16px;
}

.tabs-row {
  display: flex; gap: 4px;
  background: rgba(0,0,0,0.3);
  border-radius: var(--radius-sm); padding: 4px;
}

.tab-btn {
  flex: 1; padding: 8px 4px;
  background: transparent; border: none;
  border-radius: 7px; color: var(--text-muted);
  font-family: var(--font-main); font-size: 0.85rem; font-weight: 600;
  cursor: pointer; transition: var(--transition-smooth); letter-spacing: 0.02em;
}
.tab-btn.active {
  background: var(--accent-gradient); color: #fff;
  box-shadow: 0 2px 12px rgba(79,172,254,0.4);
}
.tab-btn:not(.active):hover { color: var(--text-secondary); background: var(--bg-glass-hover); }

.period-nav {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}

.nav-btn {
  display: flex; align-items: center; justify-content: center;
  width: 34px; height: 34px;
  background: var(--bg-glass); border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm); color: var(--text-secondary);
  cursor: pointer; transition: var(--transition-fast); flex-shrink: 0;
}
.nav-btn:hover { background: var(--bg-glass-hover); color: var(--accent-1); border-color: var(--border-glow); }

.period-label {
  font-size: 0.85rem; font-weight: 500; color: var(--text-secondary);
  text-align: center; flex: 1;
}

.chart-wrapper { position: relative; height: 220px; }
.chart-wrapper canvas { width: 100% !important; }

.chart-empty {
  position: absolute; inset: 0;
  display: none; flex-direction: column; align-items: center; justify-content: center;
  gap: 10px; color: var(--text-muted); font-size: 0.88rem;
}
.chart-empty.visible { display: flex; }

/* ========= Hero (compact horizontal) ========= */
.hero-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: linear-gradient(135deg, rgba(79,172,254,0.1) 0%, rgba(0,242,254,0.05) 100%);
  border: 1px solid rgba(79,172,254,0.18);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  box-shadow: 0 4px 20px rgba(79,172,254,0.07), inset 0 1px 0 rgba(255,255,255,0.06);
}

.cw-left { display: flex; flex-direction: column; gap: 1px; }

.cw-label {
  font-size: 0.7rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--accent-1);
}

.cw-value-row { display: flex; align-items: baseline; gap: 5px; }

.cw-value {
  font-family: var(--font-mono);
  font-size: 2.4rem; font-weight: 500; line-height: 1;
  background: var(--accent-gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  transition: var(--transition-smooth);
}

.cw-unit { font-size: 1rem; font-weight: 400; color: var(--text-secondary); }
.cw-date { font-size: 0.75rem; color: var(--text-muted); margin-top: 2px; }

/* ========= Buttons ========= */
.btn-add-weight {
  display: flex; align-items: center; gap: 6px;
  flex-shrink: 0;
  padding: 11px 18px;
  background: var(--accent-gradient); border: none;
  border-radius: var(--radius-md); color: #fff;
  font-family: var(--font-main); font-size: 0.9rem; font-weight: 600;
  cursor: pointer; white-space: nowrap;
  box-shadow: 0 4px 18px rgba(79,172,254,0.38);
  transition: var(--transition-smooth); letter-spacing: 0.01em;
}
.btn-add-weight:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(79,172,254,0.5); }
.btn-add-weight:active { transform: scale(0.97); }

.btn-icon {
  display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px;
  background: var(--bg-glass); border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm); color: var(--text-secondary);
  cursor: pointer; transition: var(--transition-fast);
  backdrop-filter: var(--blur-glass);
}
.btn-icon:hover { background: var(--bg-glass-hover); color: var(--text-primary); border-color: var(--border-glow); }

.btn-primary {
  padding: 12px 24px;
  background: var(--accent-gradient); border: none;
  border-radius: var(--radius-sm); color: #fff;
  font-family: var(--font-main); font-size: 0.95rem; font-weight: 600;
  cursor: pointer; transition: var(--transition-smooth);
  box-shadow: 0 4px 16px rgba(79,172,254,0.3); letter-spacing: 0.01em;
}
.btn-primary:hover { box-shadow: 0 6px 24px rgba(79,172,254,0.5); transform: translateY(-1px); }
.btn-primary:active { transform: scale(0.97); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; transform: none; box-shadow: none; }

.btn-secondary {
  padding: 12px 24px;
  background: transparent; border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm); color: var(--text-secondary);
  font-family: var(--font-main); font-size: 0.95rem; font-weight: 500;
  cursor: pointer; transition: var(--transition-fast);
}
.btn-secondary:hover { background: var(--bg-glass-hover); color: var(--text-primary); border-color: var(--border-glow); }

/* ========= Metrics: 3 cols in one row ========= */
.metrics-section {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.metric-card {
  border-radius: var(--radius-md);
  padding: 12px 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: var(--transition-smooth);
  cursor: default;
  min-width: 0;
}
.metric-card:hover { background: var(--bg-glass-hover); border-color: var(--border-glow); transform: translateY(-2px); }

.metric-icon {
  width: 26px; height: 26px;
  border-radius: 7px;
  background: rgba(79,172,254,0.12);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent-1); flex-shrink: 0;
}

.metric-content {
  display: flex; flex-direction: column; gap: 3px; min-width: 0;
}

.metric-label {
  font-size: 0.63rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--text-muted);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 0.9rem; font-weight: 500;
  color: var(--text-primary); letter-spacing: -0.02em;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.metric-value.positive { color: var(--up-color); }
.metric-value.negative { color: var(--down-color); }

/* ========= Floating Bottom Nav ========= */
.bottom-nav {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  width: auto;
}

.bottom-nav-pill {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  border-radius: var(--radius-pill);
  padding: 8px 8px;
  background: rgba(10, 22, 40, 0.88);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(79,172,254,0.15);
  box-shadow: 0 8px 40px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.04) inset;
}

.nav-action-btn {
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  padding: 8px 0;
  width: 80px;
  background: transparent; border: none;
  border-radius: 50px;
  color: var(--text-muted);
  cursor: pointer; transition: var(--transition-fast);
  font-family: var(--font-main);
}
.nav-action-btn span {
  font-size: 0.62rem; font-weight: 600; letter-spacing: 0.04em;
  text-transform: uppercase; line-height: 1;
}
.nav-action-btn:hover { color: var(--accent-1); background: rgba(79,172,254,0.08); }
.nav-action-btn:active { transform: scale(0.93); }

/* ========= Modals ========= */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(6,13,26,0.85);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  z-index: 200;
  display: flex; align-items: flex-end; justify-content: center;
  padding: 0; opacity: 0; pointer-events: none;
  transition: opacity var(--transition-smooth);
}
.modal-overlay.visible { opacity: 1; pointer-events: all; }

.modal {
  width: 100%; max-width: 520px;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  transform: translateY(100%);
  transition: transform var(--transition-spring);
}
.modal-overlay.visible .modal { transform: translateY(0); }

.modal-large {
  max-height: 80vh; overflow: hidden;
  display: flex; flex-direction: column;
}

.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 24px 0;
}
.modal-header h2 { font-size: 1.15rem; font-weight: 700; letter-spacing: -0.02em; }

.modal-body { padding: 20px 24px; overflow-y: auto; flex: 1; }

.modal-footer {
  display: flex; gap: 10px;
  padding: 0 24px;
  padding-bottom: max(28px, env(safe-area-inset-bottom, 28px));
}
.modal-footer .btn-primary, .modal-footer .btn-secondary { flex: 1; }

/* ========= Form ========= */
.form-group { margin-bottom: 18px; }

.form-label {
  display: block; font-size: 0.82rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-muted); margin-bottom: 8px;
}

.form-input {
  width: 100%; padding: 14px 16px;
  background: rgba(0,0,0,0.3); border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm); color: var(--text-primary);
  font-family: var(--font-main); font-size: 1rem;
  transition: var(--transition-fast); outline: none;
  -webkit-appearance: none; appearance: none; color-scheme: dark;
}
.form-input:focus { border-color: var(--accent-1); box-shadow: 0 0 0 3px rgba(79,172,254,0.15); }
.form-input::placeholder { color: var(--text-muted); }

.weight-input-row { display: flex; align-items: center; gap: 10px; }
.weight-input { text-align: center; font-family: var(--font-mono); font-size: 1.5rem; font-weight: 500; flex: 1; }

.stepper-btn {
  width: 48px; height: 52px;
  background: var(--bg-glass); border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm); color: var(--text-secondary); font-size: 1.4rem;
  cursor: pointer; transition: var(--transition-fast);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; font-family: var(--font-main);
}
.stepper-btn:hover { background: rgba(79,172,254,0.15); color: var(--accent-1); border-color: var(--border-glow); }
.stepper-btn:active { transform: scale(0.93); }

.btn-toggle-note {
  background: none; border: none; color: var(--accent-1);
  font-family: var(--font-main); font-size: 0.88rem; font-weight: 500;
  cursor: pointer; padding: 0; transition: var(--transition-fast);
}
.btn-toggle-note:hover { opacity: 0.75; }

/* ========= History ========= */
.history-list { display: flex; flex-direction: column; gap: 8px; }

.history-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 14px;
  background: rgba(0,0,0,0.25); border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm); transition: var(--transition-fast);
  animation: slideIn 200ms ease forwards;
}
@keyframes slideIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}
.history-item:hover { background: var(--bg-glass-hover); border-color: var(--border-glow); }

.history-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-gradient); flex-shrink: 0; }

.history-main { flex: 1; display: flex; flex-direction: column; gap: 2px; }
.history-date { font-size: 0.82rem; color: var(--text-muted); }
.history-note { font-size: 0.78rem; color: var(--text-muted); font-style: italic; }

.history-weight { font-family: var(--font-mono); font-size: 1rem; font-weight: 500; color: var(--text-primary); margin-right: 8px; }

.history-delta {
  font-size: 0.72rem; font-weight: 600; padding: 2px 7px;
  border-radius: 4px; min-width: 46px; text-align: center; flex-shrink: 0;
}
.history-delta.up { background: rgba(255,107,107,0.15); color: var(--up-color); }
.history-delta.down { background: rgba(81,207,102,0.15); color: var(--down-color); }
.history-delta.neutral { background: rgba(116,192,252,0.1); color: var(--neutral-color); }

.history-actions { display: flex; gap: 4px; opacity: 0; transition: var(--transition-fast); }
.history-item:hover .history-actions { opacity: 1; }
.history-actions .btn-icon { width: 32px; height: 32px; border-radius: 7px; }
.btn-delete:hover { background: rgba(255,107,107,0.15) !important; color: var(--up-color) !important; border-color: rgba(255,107,107,0.3) !important; }

/* ========= Import ========= */
.import-drop-zone {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  padding: 32px 20px;
  border: 2px dashed var(--border-glass); border-radius: var(--radius-md);
  text-align: center; color: var(--text-secondary); font-size: 0.9rem;
  transition: var(--transition-fast);
}
.import-drop-zone.drag-over { border-color: var(--accent-1); background: rgba(79,172,254,0.06); }
.import-drop-zone span { color: var(--text-muted); font-size: 0.82rem; }

.import-preview {
  font-size: 0.88rem; color: var(--text-secondary);
  padding: 12px 16px;
  background: rgba(79,172,254,0.08); border-radius: var(--radius-sm);
  border: 1px solid rgba(79,172,254,0.2); margin-bottom: 16px;
}

.radio-group { display: flex; flex-direction: column; gap: 10px; }

.radio-option {
  display: flex; align-items: center; gap: 12px; padding: 14px 16px;
  background: rgba(0,0,0,0.2); border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm); cursor: pointer; transition: var(--transition-fast);
}
.radio-option:has(input:checked) { border-color: var(--accent-1); background: rgba(79,172,254,0.08); }
.radio-option input { display: none; }

.radio-custom {
  width: 18px; height: 18px; border-radius: 50%; border: 2px solid var(--border-glass);
  flex-shrink: 0; transition: var(--transition-fast);
}
.radio-option:has(input:checked) .radio-custom { border-color: var(--accent-1); background: var(--accent-gradient); }

.radio-option div { display: flex; flex-direction: column; gap: 2px; }
.radio-option strong { font-size: 0.92rem; font-weight: 600; color: var(--text-primary); }
.radio-option small { font-size: 0.78rem; color: var(--text-muted); }

/* ========= Toast ========= */
.toast {
  position: fixed; bottom: 100px; left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(13,31,56,0.95);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass); border-radius: 50px;
  padding: 12px 22px; font-size: 0.88rem; font-weight: 500; color: var(--text-primary);
  white-space: nowrap; opacity: 0; transition: all var(--transition-smooth);
  pointer-events: none; z-index: 500; box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.success { border-color: rgba(81,207,102,0.4); }
.toast.error { border-color: rgba(255,107,107,0.4); }

/* ========= Chart Tooltip ========= */
.chart-tooltip {
  position: fixed; pointer-events: none;
  background: rgba(10,22,40,0.95); backdrop-filter: blur(10px);
  border: 1px solid var(--border-glow); border-radius: var(--radius-sm);
  padding: 8px 12px; font-size: 0.82rem; color: var(--text-primary);
  white-space: nowrap; opacity: 0; transition: opacity var(--transition-fast);
  z-index: 300; box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}
.chart-tooltip.visible { opacity: 1; }
.tooltip-date { color: var(--text-muted); font-size: 0.75rem; }
.tooltip-weight { font-family: var(--font-mono); font-size: 1rem; font-weight: 500; color: var(--accent-1); }

/* ========= Misc ========= */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-glass); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-1); }

.history-empty { text-align: center; color: var(--text-muted); font-size: 0.9rem; padding: 40px 20px; }

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* ========= Desktop ========= */
@media (min-width: 900px) {
  .app { max-width: 720px; }
  .main { padding: 20px 20px 0; gap: 16px; }
  .chart-wrapper { height: 280px; }
  .modal-overlay { align-items: center; }
  .modal { border-radius: var(--radius-xl); max-height: 90vh; transform: scale(0.95) translateY(10px); }
  .modal-overlay.visible .modal { transform: scale(1) translateY(0); }
  .bottom-nav { max-width: 688px; }
}

/* ========= Login Screen ========= */
.login-screen {
  position: fixed; inset: 0; z-index: 1000;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
}

.login-card {
  width: 100%; max-width: 380px;
  border-radius: var(--radius-xl);
  padding: 40px 32px 36px;
}

.login-logo {
  display: flex; flex-direction: column; align-items: center;
  gap: 8px; margin-bottom: 36px; text-align: center;
}

.login-logo h1 {
  font-size: 1.8rem; font-weight: 800;
  letter-spacing: -0.04em;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-logo p {
  font-size: 0.9rem; color: var(--text-muted);
}

.login-error {
  font-size: 0.85rem; color: var(--up-color);
  min-height: 20px; margin: -8px 0 12px;
  text-align: center;
}

.login-submit {
  width: 100%; margin-top: 4px;
  padding: 16px;
  font-size: 1rem;
}