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

:root {
    --bg: #0f172a;
    --card: #1e293b;
    --border: #334155;
    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
    --radius: 12px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    padding: 1.5rem 1rem 5rem;
    max-width: 900px;
    margin: 0 auto;
}

/* Typography */
h1 { font-size: 1.75rem; }
.subtitle { color: var(--text-muted); font-size: 0.9rem; margin-top: 0.25rem; }

/* Header */
.page-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.back-btn {
    background: var(--card);
    border: 1px solid var(--border);
    color: var(--text-muted);
    border-radius: 8px;
    padding: 0.4rem 0.75rem;
    cursor: pointer;
    font-size: 0.95rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    white-space: nowrap;
}
.back-btn:hover { border-color: var(--accent); color: var(--text); }

/* Cards */
.card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 1.25rem;
    border: 1px solid var(--border);
    margin-bottom: 1rem;
}
.card-title {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 0.85rem;
    font-weight: 600;
}

/* Navigation grid */
.nav-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}
@media (min-width: 520px) {
    .nav-grid { grid-template-columns: repeat(3, 1fr); }
}

.nav-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem 1rem;
    text-align: center;
    text-decoration: none;
    color: var(--text);
    transition: border-color 0.15s, background 0.15s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}
.nav-card:hover { border-color: var(--accent); background: rgba(59,130,246,0.07); }
.nav-card .icon { font-size: 2.5rem; }
.nav-card .label { font-size: 1rem; font-weight: 600; }
.nav-card .sub { font-size: 0.78rem; color: var(--text-muted); }

/* Forms */
.form-group { margin-bottom: 1rem; }
.form-group label {
    display: block;
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.6rem 0.85rem;
    color: var(--text);
    font-size: 0.95rem;
    font-family: inherit;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

/* Buttons */
.btn {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 0.6rem 1.25rem;
    font-size: 0.95rem;
    cursor: pointer;
    font-family: inherit;
    transition: background 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}
.btn:hover { background: var(--accent-hover); }
.btn:disabled { background: var(--border); color: var(--text-muted); cursor: not-allowed; }
.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.82rem; }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #dc2626; }
.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
}
.btn-outline:hover { border-color: var(--accent); color: var(--text); background: transparent; }

/* Messages */
.msg { padding: 0.75rem 1rem; border-radius: 8px; font-size: 0.9rem; margin-bottom: 1rem; }
.msg-success { background: rgba(34,197,94,0.1); border: 1px solid rgba(34,197,94,0.3); color: var(--success); }
.msg-error   { background: rgba(239,68,68,0.1);  border: 1px solid rgba(239,68,68,0.3);  color: var(--danger); }
.msg-info    { background: rgba(59,130,246,0.1); border: 1px solid rgba(59,130,246,0.3); color: #93c5fd; }

/* List items */
.list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}
.list-item:last-child { border-bottom: none; }
.list-item-main { font-weight: 500; }
.list-item-sub { font-size: 0.82rem; color: var(--text-muted); margin-top: 0.15rem; }

/* Weather */
.weather-big { text-align: center; padding: 1rem 0 1.5rem; }
.weather-temp { font-size: 4.5rem; font-weight: 700; line-height: 1; }
.weather-icon { font-size: 3.5rem; margin-bottom: 0.5rem; }
.weather-desc { color: var(--text-muted); margin-top: 0.3rem; }
.weather-recommend {
    background: rgba(59,130,246,0.1);
    border: 1px solid rgba(59,130,246,0.25);
    border-radius: 10px;
    padding: 0.85rem 1rem;
    color: #93c5fd;
    font-size: 0.95rem;
    margin-top: 1rem;
    line-height: 1.5;
}
.weather-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-top: 1rem;
}
.weather-stat {
    text-align: center;
    padding: 0.85rem;
    background: rgba(255,255,255,0.05);
    border-radius: 8px;
}
.weather-stat-val { font-size: 1.4rem; font-weight: 600; }
.weather-stat-label { font-size: 0.72rem; color: var(--text-muted); margin-top: 0.2rem; text-transform: uppercase; letter-spacing: 0.04em; }

/* Bottom nav */
.bottom-nav {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    background: var(--card);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-around;
    padding: 0.4rem 0 0.5rem;
    z-index: 100;
}
.bottom-nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.65rem;
    padding: 0.3rem 0.6rem;
    border-radius: 8px;
    transition: color 0.15s;
}
.bottom-nav a:hover,
.bottom-nav a.active { color: var(--accent); }
.bottom-nav .nav-icon { font-size: 1.35rem; }

/* Table */
table { width: 100%; border-collapse: collapse; }
th {
    text-align: left;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid var(--border);
}
td { padding: 0.7rem 0.75rem; border-bottom: 1px solid rgba(51,65,85,0.4); font-size: 0.9rem; }
tr:last-child td { border-bottom: none; }
.positive { color: var(--success); }
.negative { color: var(--danger); }

/* Loading */
.loading { text-align: center; color: var(--text-muted); padding: 2rem; }
.spinner {
    display: inline-block;
    width: 22px; height: 22px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    margin-bottom: 0.5rem;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Chart */
.chart-container { position: relative; height: 300px; }

/* Stock controls */
.stock-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 0.85rem;
    align-items: center;
}
.stock-select {
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.4rem 0.75rem;
    font-size: 0.88rem;
    cursor: pointer;
    flex: 1;
    min-width: 130px;
}
.stock-select:focus { outline: none; border-color: var(--accent); }
.period-btns { display: flex; gap: 0.35rem; flex-wrap: wrap; }
.period-btn {
    background: var(--bg);
    color: var(--text-muted);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.3rem 0.6rem;
    font-size: 0.78rem;
    cursor: pointer;
    transition: background 0.15s;
}
.period-btn.active, .period-btn:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

/* Tags */
.tag {
    display: inline-block;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.2rem 0.5rem;
    font-size: 0.73rem;
    color: var(--text-muted);
    white-space: nowrap;
}
.tag-vacation    { border-color: rgba(245,158,11,0.4); color: var(--warning); }
.tag-appointment { border-color: rgba(59,130,246,0.4); color: #93c5fd; }
.tag-birthday    { border-color: rgba(236,72,153,0.4); color: #f9a8d4; }

/* Login */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}
.login-box {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    width: 100%;
    max-width: 380px;
}
.login-logo  { text-align: center; font-size: 3rem; margin-bottom: 0.5rem; }
.login-title { text-align: center; font-size: 1.4rem; font-weight: 700; margin-bottom: 0.2rem; }
.login-sub   { text-align: center; color: var(--text-muted); font-size: 0.88rem; margin-bottom: 1.5rem; }

/* Inline input row */
.input-inline {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    color: var(--text);
    font-size: 0.9rem;
    font-family: inherit;
}
.input-inline:focus { outline: none; border-color: var(--accent); }

hr.divider { border: none; border-top: 1px solid var(--border); margin: 1rem 0; }

/* Mobile: Cards go edge-to-edge */
@media (max-width: 640px) {
    body {
        padding-left: 0;
        padding-right: 0;
    }
    .card {
        border-radius: 0;
        margin-left: 0;
        margin-right: 0;
        border-left: none;
        border-right: none;
    }
    .page-header {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    .nav-grid {
        padding: 0 1rem;
    }
}