/* ============================================ */
/* GLOBAL THEME & CSS VARIABLES                 */
/* ============================================ */

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

body {
    font-family: 'Kanit', sans-serif;
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
    padding: 20px;
    display: flex;
    justify-content: center;
}

#app {
    max-width: 500px;
    width: 100%;
}

/* ========== LIGHT MODE (Default) ========== */
:root,
body.light {
    --bg-primary: #f5f5f5;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --text-primary: #1a1a2e;
    --text-secondary: #666666;
    --text-muted: #888888;
    --border-color: #e0e0e0;
    --border-light: rgba(0,0,0,0.08);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.1);
    --danger: #e74c3c;
    --danger-bg: #fee;
    --warning: #f39c12;
    --warning-bg: #fff3e0;
    --success: #2ecc71;
    --success-bg: #e8f8f0;
    --primary: #10c54a;
    --primary-dark: #10ac41;
    --modal-overlay: rgba(0, 0, 0, 0.5);
}

/* ========== DARK MODE ========== */
body.dark {
    --bg-primary: #04041a;
    --bg-secondary: #18182b;
    --bg-card: rgb(2, 14, 37);
    --text-primary: #ffffff;
    --text-secondary: #aaaaaa;
    --text-muted: #777777;
    --border-color: rgba(255,255,255,0.08);
    --border-light: rgba(255,255,255,0.05);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.4);
    --danger: #f87171;
    --danger-bg: rgba(248,113,113,0.12);
    --warning: #fbbf24;
    --warning-bg: rgba(251,191,36,0.1);
    --success: #4ade80;
    --success-bg: rgba(74,222,128,0.08);
    --primary: #1a8dff;
    --primary-dark: #0064e6;
    --modal-overlay: rgba(0, 0, 0, 0.8);
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

/* ========== UTILITY CLASSES ========== */
.hidden {
    display: none !important;
}

/* ========== SVG Icons Color ========== */
svg {
    stroke: currentColor;
    fill: none;
}

button svg {
    pointer-events: none;
}

/* ========== BUTTONS ========== */
button {
    cursor: pointer;
    font-family: 'Kanit', sans-serif;
    border: none;
    transition: all 0.2s ease;
}

button:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--primary);
    color: #000;
    padding: 14px 20px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    width: 100%;
}

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

.btn-danger {
    background-color: transparent;
    color: var(--danger);
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid var(--danger);
}

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

/* ========== DIVIDER ========== */
.divider {
    text-align: center;
    padding: 16px;
    color: var(--text-secondary);
    font-size: 13px;
    position: relative;
}

.divider::before,
.divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 35%;
    height: 1px;
    background: var(--border-color);
}

.divider::before { left: 0; }
.divider::after { right: 0; }

/* ========== FORM ELEMENTS ========== */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 6px;
    font-weight: 500;
    letter-spacing: 0.3px;
}

.form-group input,
.form-group select {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 14px;
    color: var(--text-primary);
    font-size: 15px;
    font-family: 'Kanit', sans-serif;
    outline: none;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--primary);
}

.form-group input[type="date"] {
    cursor: pointer;
}

.form-group input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(0.5);
    cursor: pointer;
}

body.dark .form-group input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(1);
}

.form-row {
    display: flex;
    gap: 12px;
}

.form-row .form-group {
    flex: 1;
}

/* ========== QUICK DATE BUTTONS ========== */
.quick-dates-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
    font-weight: 500;
    letter-spacing: 0.3px;
}

.quick-dates {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: 16px;
}

.quick-date-btn {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 10px;
    color: var(--text-secondary);
    font-family: 'Kanit', sans-serif;
    font-size: 13px;
    font-weight: 500;
    text-align: center;
}

.quick-date-btn:hover {
    background: var(--warning-bg);
    border-color: var(--warning);
    color: var(--warning);
}

.or-divider {
    text-align: center;
    color: var(--text-muted);
    font-size: 12px;
    margin: 8px 0 16px;
    position: relative;
}

.or-divider::before,
.or-divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 40%;
    height: 1px;
    background: var(--border-color);
}

.or-divider::before { left: 0; }
.or-divider::after { right: 0; }

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar {
    width: 4px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}