:root {
    /* ค่าเริ่มต้น (Dark Mode) */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: #334155;

    --bg-input: #0f172a;
    --bg-item: #1e293b;
    --bg-hover: #0f172a80;

    --color-q1: #ef4444;
    --color-q2: #3b82f6;
    --color-q3: #f59e0b;
    --color-q4: #64748b;
    --color-good: #10b981;
    --color-bad: #f43f5e;
    --color-income: #10b981;
    --color-expense: #f43f5e;
    --primary-btn: #6366f1;
    --primary-hover: #4f46e5;
    --sidebar-width: 260px;
}

/* ตั้งค่าธีมสว่าง (Light Mode) */
:root[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border-color: #cbd5e1;

    --bg-input: #ffffff;
    --bg-item: #f1f5f9;
    --bg-hover: #e2e8f0;
}

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

body {
    font-family: 'Inter', 'Noto Sans Thai', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s, color 0.3s;
}

.app-container {
    display: flex;
    height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
    z-index: 1000;
}

.sidebar-logo {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-logo h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 1.5rem;
    cursor: pointer;
    margin-left: auto;
}

.sidebar-nav {
    flex-grow: 1;
    padding: 1.5rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.8rem 1.5rem;
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.nav-item:hover,
.nav-item.active {
    background-color: var(--bg-hover);
    color: var(--text-main);
    border-left-color: var(--primary-btn);
}

.nav-icon {
    font-size: 1.2rem;
}

.sidebar-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* --- Main Content --- */
.main-content {
    flex: 1;
    width: calc(100% - var(--sidebar-width));
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
}

.top-header {
    background-color: var(--bg-primary);
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 10;
    transition: background-color 0.3s;
}

.top-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-main);
}

.content-body {
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

.view-section {
    display: none;
    animation: fadeIn 0.3s ease;
}

.view-section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    margin-bottom: 1.5rem;
    transition: background-color 0.3s, border-color 0.3s;
}

.card-header {
    margin-bottom: 1.25rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
}

.card-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-main);
}

.grid-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.btn {
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: background 0.2s;
}

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

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

.btn-success {
    background-color: #10b981;
    color: white;
}

.btn-success:hover {
    background-color: #059669;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

.btn-action {
    background: var(--bg-item);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    font-size: 0.8rem;
    cursor: pointer;
}

.btn-action:hover {
    background: var(--bg-hover);
}

/* ปรับความสูง Matrix ตามที่คุณขอ (min-height 350px และ max-height 260px) */
.matrix-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.matrix-quadrant {
    background: var(--bg-hover);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    min-height: 350px;
}

.matrix-quadrant.q1 {
    border-top: 4px solid var(--color-q1);
}

.matrix-quadrant.q2 {
    border-top: 4px solid var(--color-q2);
}

.matrix-quadrant.q3 {
    border-top: 4px solid var(--color-q3);
}

.matrix-quadrant.q4 {
    border-top: 4px solid var(--color-q4);
}

.quadrant-header h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-main);
}

.task-list {
    list-style: none;
    flex-grow: 1;
    margin-bottom: 1rem;
    overflow-y: auto;
    max-height: 260px;
}

.task-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-item);
    padding: 0.5rem;
    border-radius: 4px;
    font-size: 0.85rem;
    margin-bottom: 0.4rem;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.quadrant-input {
    display: flex;
    gap: 0.5rem;
}

.quadrant-input input {
    flex-grow: 1;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.5rem;
    color: var(--text-main);
}

.quadrant-input button {
    background: var(--bg-item);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 0 1rem;
    border-radius: 4px;
    cursor: pointer;
}

.delete-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-weight: bold;
}

.delete-btn:hover {
    color: var(--color-bad);
}

.checklist-form {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 0.75rem;
}

.checklist-form input,
.finance-form input,
.finance-form select {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.6rem;
    color: var(--text-main);
    width: 100%;
}

.activity-list {
    list-style: none;
}

.activity-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--bg-hover);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
    gap: 0.5rem;
    color: var(--text-main);
}

.badge-good {
    background: #10b98120;
    color: var(--color-good);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: bold;
}

.badge-bad {
    background: #f43f5e20;
    color: var(--color-bad);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: bold;
}

.eval-btn {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    cursor: pointer;
}

.eval-btn:hover {
    background: var(--bg-item);
    color: var(--text-main);
}

.goal-card {
    background: var(--bg-hover);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 0.75rem;
    color: var(--text-main);
}

.goal-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    align-items: center;
}

.progress-bar-bg {
    background: var(--bg-input);
    height: 8px;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 0.75rem;
    border: 1px solid var(--border-color);
}

.progress-bar-fill {
    background: linear-gradient(90deg, #6366f1, #a855f7);
    height: 100%;
    transition: width 0.3s;
}

.finance-summary-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.summary-card {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all 0.3s;
}

.summary-card h3 {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.summary-card h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-main);
}

.summary-card.balance h2 {
    color: var(--text-main);
}

.summary-card.income h2 {
    color: var(--color-income);
}

.summary-card.expense h2 {
    color: var(--color-expense);
}

.finance-form {
    display: grid;
    grid-template-columns: 1fr 3fr 1.5fr 1fr auto;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.finance-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.finance-table th {
    text-align: left;
    padding: 0.75rem;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
    font-weight: 500;
}

.finance-table td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
}

.text-income {
    color: var(--color-income);
    font-weight: bold;
}

.text-expense {
    color: var(--color-expense);
    font-weight: bold;
}

.aws-status-mini {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-indicator.connected {
    background: #10b981;
    box-shadow: 0 0 5px #10b981;
}

.status-indicator.syncing {
    background: #f59e0b;
    box-shadow: 0 0 5px #f59e0b;
}

@media (max-width: 1024px) {
    .finance-form {
        grid-template-columns: 1fr 1fr;
    }

    .finance-form #finance-desc {
        grid-column: span 2;
    }

    .checklist-form {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        flex-shrink: 0;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .mobile-menu-toggle {
        display: block;
    }

    .sidebar-nav {
        display: none;
        padding: 0.5rem 0;
    }

    .sidebar.expanded .sidebar-nav {
        display: flex;
    }

    .sidebar-footer {
        display: none;
    }

    .main-content {
        width: 100%;
    }

    .matrix-container,
    .grid-2col,
    .finance-summary-grid {
        grid-template-columns: 1fr;
    }

    .finance-form {
        grid-template-columns: 1fr;
    }

    .finance-form #finance-desc {
        grid-column: span 1;
    }
}

/* --- Diary Calendar Styles --- */
.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    text-align: center;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.8rem;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
}

.calendar-day {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 5px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 65px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    position: relative;
    color: var(--text-main);
    font-weight: 500;
}

.calendar-day:hover {
    background: var(--bg-hover);
    border-color: var(--primary-btn);
    transform: translateY(-2px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.calendar-day.empty {
    background: transparent;
    border: none;
    cursor: default;
    box-shadow: none;
}

.calendar-day.empty:hover {
    transform: none;
}

.calendar-day.active {
    border: 2px solid var(--primary-btn);
    background: var(--bg-hover);
    box-shadow: 0 0 0 2px var(--primary-btn) inset;
}

.calendar-day.today {
    color: var(--primary-btn);
    font-weight: 700;
    background: var(--bg-hover);
}

.diary-dot {
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, #f59e0b, #ef4444);
    border-radius: 50%;
    margin-top: 8px;
    box-shadow: 0 0 5px rgba(245, 158, 11, 0.5);
}

#diary-content {
    flex-grow: 1;
    width: 100%;
    min-height: 350px;
    background: transparent;
    color: var(--text-main);
    border: none;
    padding: 1rem 0;
    font-family: 'Inter', 'Noto Sans Thai', sans-serif;
    font-size: 1.05rem;
    line-height: 1.8;
    resize: none;
    outline: none;
    border-top: 1px dashed var(--border-color);
    margin-top: 10px;
}

#diary-content::placeholder {
    color: var(--text-muted);
    font-style: italic;
}