:root {
    /* --- Modern Glassmorphism Theme (RGCC Emerald) --- */
    --bg-body: #f0fdf4;
    --text-main: #1e293b;
    --text-muted: #64748b;

    /* RGCC Deep Emerald Palette */
    --navbar-bg: rgba(6, 78, 59, 0.85);
    --navbar-text: #ecfdf5;
    --brand-highlight: #34d399;

    /* Glass Effect Variables */
    --card-bg: rgba(255, 255, 255, 0.7);
    --card-border: rgba(255, 255, 255, 0.5);
    --card-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    --glass-blur: 16px;

    --primary-color: #059669;
    --primary-hover: #047857;
    --light-accent: #d1fae5;

    /* Slot Colors */
    --slot-row-bg: rgba(255, 255, 255, 0.6);
    --slot-row-border: rgba(167, 243, 208, 0.4);
    --slot-time-bg: rgba(255, 255, 255, 0.8);
    --slot-time-text: #064e3b;

    --slot-empty-bg: rgba(255, 255, 255, 0.4);
    --slot-empty-text: #94a3b8;
    --slot-empty-hover-bg: #d1fae5;
    --slot-empty-hover-border: #34d399;

    --slot-booked-bg: rgba(226, 232, 240, 0.7);
    --slot-booked-text: #64748b;
    --slot-booked-border: rgba(203, 213, 225, 0.5);

    --slot-my-bg: rgba(167, 243, 208, 0.8);
    --slot-my-text: #064e3b;
    --slot-my-border: #10b981;

    --slot-guest-bg: rgba(253, 230, 138, 0.8);
    --slot-guest-text: #92400e;
    --slot-guest-border: #fcd34d;

    /* Inputs */
    --input-bg: rgba(255, 255, 255, 0.8);
    --input-text: #1e293b;
    --input-border: rgba(148, 163, 184, 0.3);

    /* Calendar */
    --fc-page-bg: transparent;
    --fc-neutral-bg: rgba(208, 208, 208, 0.3);
}

#account-management { color: var(--text-main); }
#account-management .table {
    --bs-table-color: var(--text-main);
    --bs-table-bg: transparent;
    --bs-table-border-color: var(--input-border);
}
#account-management h3 { color: var(--text-main); }
#account-management .text-muted { color: var(--text-muted) !important; }
#account-management .btn-outline-secondary { color: var(--text-main); border-color: var(--text-muted); }

[data-theme="dark"] #admin-view {
    color: #eaf2e4;
}
[data-theme="dark"] #admin-view .card {
    background: #192a20;
    border-color: #314533;
}
[data-theme="dark"] #admin-view .admin-panel-title {
    color: #ffd66b !important;
}
[data-theme="dark"] #admin-view .admin-block-header {
    background: #4a3a12;
    border-color: #786226;
    color: #fff2c7;
}
[data-theme="dark"] #admin-view .admin-tournaments-header {
    background: #263a44;
    border-color: #405866;
    color: #e2f1f7;
}
[data-theme="dark"] #admin-view .card-body,
[data-theme="dark"] #admin-view .form-label,
[data-theme="dark"] #admin-view .admin-tournaments-table td,
[data-theme="dark"] #admin-view .admin-tournaments-table th {
    color: #eaf2e4;
}
[data-theme="dark"] #admin-view .form-control,
[data-theme="dark"] #admin-view .form-select {
    background: #14231a;
    border-color: #526b55;
    color: #f3f8ed;
    color-scheme: dark;
}
[data-theme="dark"] #admin-view .form-control::placeholder {
    color: #b9c8b2;
}
[data-theme="dark"] #admin-view .admin-tournaments-table {
    --bs-table-color: #eaf2e4;
    --bs-table-bg: #192a20;
    --bs-table-hover-color: #ffffff;
    --bs-table-hover-bg: #29402e;
    --bs-table-border-color: #39513c;
}
[data-theme="dark"] #admin-view .admin-tournaments-table thead {
    background: #223528;
    color: #f4f8ef;
}
[data-theme="dark"] #admin-view .admin-tournaments-table .text-primary {
    color: #9ad5b1 !important;
}

[data-theme="dark"] {
    /* --- Dark Theme --- */
    --bg-body: #020617;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;

    --navbar-bg: rgba(2, 44, 34, 0.85);
    --navbar-text: #f0fdf4;
    --brand-highlight: #10b981;

    --card-bg: rgba(15, 23, 42, 0.7);
    --card-border: rgba(255, 255, 255, 0.05);
    --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);

    --primary-color: #10b981;
    --primary-hover: #34d399;
    --light-accent: rgba(5, 150, 105, 0.3);

    /* Slot Colors */
    --slot-row-bg: rgba(30, 41, 59, 0.6);
    --slot-row-border: rgba(51, 65, 85, 0.5);
    --slot-time-bg: rgba(15, 23, 42, 0.8);
    --slot-time-text: #f8fafc;

    --slot-empty-bg: rgba(30, 41, 59, 0.4);
    --slot-empty-text: #64748b;
    --slot-empty-hover-bg: rgba(16, 185, 129, 0.2);
    --slot-empty-hover-border: #10b981;

    --slot-booked-bg: rgba(15, 23, 42, 0.8);
    --slot-booked-text: #94a3b8;
    --slot-booked-border: rgba(51, 65, 85, 0.8);

    --slot-my-bg: rgba(5, 150, 105, 0.4);
    --slot-my-text: #a7f3d0;
    --slot-my-border: #059669;

    --slot-guest-bg: rgba(146, 64, 14, 0.4);
    --slot-guest-text: #fde68a;
    --slot-guest-border: #b45309;

    /* Inputs */
    --input-bg: rgba(30, 41, 59, 0.8);
    --input-text: #f8fafc;
    --input-border: rgba(71, 85, 105, 0.5);

    /* Calendar overrides for FullCalendar in dark mode */
    --fc-page-bg: transparent;
    --fc-neutral-bg: rgba(255, 255, 255, 0.1);
}

/* Global Elements & Mesh Gradient Background */
body {
    font-family: 'Outfit', sans-serif;
    color: var(--text-main);
    transition: background-color 0.5s ease, color 0.5s ease;
    min-height: 100vh;
    background-color: var(--bg-body);
    /* Dynamic Mesh Gradient using CSS */
    background-image: 
        radial-gradient(at 0% 0%, rgba(167, 243, 208, 0.3) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(52, 211, 153, 0.15) 0px, transparent 50%);
    background-attachment: fixed;
}

[data-theme="dark"] body {
    background-image: 
        radial-gradient(at 0% 0%, rgba(5, 150, 105, 0.2) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(2, 44, 34, 0.8) 0px, transparent 50%);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-main);
    font-weight: 600;
}

/* Floating Navbar */
.nav-wrapper {
    position: sticky;
    top: 0;
    z-index: 1040;
    padding: 0 1rem;
}

.floating-nav {
    background: var(--navbar-bg) !important;
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-radius: 50px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    max-width: 1200px;
    transition: all 0.3s ease;
}

/* Glassmorphism Cards */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--card-border);
    border-radius: 20px;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-header {
    background-color: transparent;
    border-bottom: 1px solid var(--card-border);
}

[data-theme="dark"] .text-muted {
    color: var(--text-muted) !important;
}

/* Keep page and card headings readable against the dark theme surfaces. */
[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6,
[data-theme="dark"] .modal-title,
[data-theme="dark"] .card-title {
    color: #f4f8ef !important;
}

/* Dashboard booking text was inheriting Bootstrap's dark defaults, which
   made the facility and date line disappear against dark cards. */
[data-theme="dark"] #dashboard-view .card,
[data-theme="dark"] #dashboard-view .card-header,
[data-theme="dark"] #dashboard-view .list-group-item {
    background-color: #192a20 !important;
    color: #f4f8ef !important;
    border-color: #314533 !important;
}

[data-theme="dark"] #dashboard-view h2,
[data-theme="dark"] #dashboard-view h5,
[data-theme="dark"] #dashboard-view h6,
[data-theme="dark"] #dashboard-view .list-group-item .text-muted {
    color: #f4f8ef !important;
}

[data-theme="dark"] #dashboard-view .list-group-item .text-muted {
    color: #c5d2c0 !important;
}

[data-theme="dark"] #profile-view .form-label,
[data-theme="dark"] #profile-view label {
    color: #f4f8ef !important;
}

[data-theme="dark"] #profile-view .form-control,
[data-theme="dark"] #profile-view .form-select {
    background-color: #24382b !important;
    color: #f4f8ef !important;
    border-color: #58705a !important;
}

[data-theme="dark"] #profile-view .form-control::placeholder {
    color: #aebdab !important;
}

/* Modern Inputs */
.form-control,
.form-select {
    background-color: var(--input-bg);
    color: var(--input-text);
    border-color: var(--input-border);
    border-radius: 12px;
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(4px);
}

.form-control:focus,
.form-select:focus {
    background-color: var(--input-bg);
    color: var(--input-text);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.2);
}

/* Bootstrap's select arrow needs its own right-hand gutter; the old auto width
   let it sit on top of the language text in narrow nav bars. */
#lang-selector {
    width: 72px !important;
    min-width: 72px;
    padding: 0.45rem 2rem 0.45rem 0.7rem;
    background-position: right 0.6rem center;
    background-size: 11px 8px;
    white-space: nowrap;
}

/* Modal */
.modal-content {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--card-border);
    border-radius: 24px;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.2);
    color: var(--text-main);
}

.btn-close {
    filter: invert(0);
}

[data-theme="dark"] .btn-close {
    filter: invert(1);
}

/* Custom Classes */
.text-light-green {
    color: var(--brand-highlight) !important;
}

.btn-primary-green {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    border: none;
    border-radius: 12px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(5, 150, 105, 0.3);
}

.btn-primary-green:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(5, 150, 105, 0.4);
    color: white;
}

.btn-primary-green:active {
    transform: translateY(1px);
}

.btn-light-green {
    background-color: var(--light-accent);
    color: var(--primary-color);
    border: none;
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-light-green:hover {
    background-color: var(--primary-color);
    color: white;
    transform: scale(1.05);
}

/* Course Card Micro-Animations */
.course-card {
    cursor: pointer;
    overflow: hidden;
    height: 100%;
}

.course-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0,0,0,0.12) !important;
}

.course-img {
    height: 220px;
    background-color: var(--light-accent);
    background-size: cover;
    background-position: center;
    transition: transform 0.5s ease;
}

.course-card:hover .course-img {
    transform: scale(1.05);
}

/* Date Pills */
.date-pill {
    min-width: 85px;
    text-align: center;
    padding: 12px 10px;
    border-radius: 16px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--text-main);
}

.date-pill:hover {
    border-color: var(--primary-color);
    background-color: var(--light-accent);
    transform: translateY(-3px);
}

.date-pill.active {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    border-color: transparent;
    box-shadow: 0 8px 20px rgba(5, 150, 105, 0.3);
    transform: translateY(-3px);
}

.date-pill.active small {
    color: rgba(255, 255, 255, 0.9) !important;
}

/* Schedule / Slots Layout */
.slot-row {
    display: flex;
    align-items: stretch;
    background: var(--slot-row-bg);
    border: 1px solid var(--slot-row-border);
    margin-bottom: 8px; /* Breathing room between rows */
    border-radius: 16px;
    overflow: hidden;
    backdrop-filter: blur(8px);
}

.time-label {
    width: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--slot-time-bg);
    color: var(--slot-time-text);
    border-right: 1px solid var(--slot-row-border);
    font-size: 1rem;
    font-weight: 800; /* Extra bold for modern look */
}

.slots-wrapper {
    flex-grow: 1;
    display: flex;
    padding: 6px;
    gap: 6px;
}

/* Individual Slot Styling (Pills) */
.player-slot {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    border-radius: 12px; /* Modern pill shape */
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: 55px;
}

/* Empty Slot */
.player-slot.empty {
    background-color: var(--slot-empty-bg);
    color: var(--slot-empty-text);
    border: 2px dashed var(--input-border);
    cursor: pointer;
}

.player-slot.empty:hover {
    background-color: var(--slot-empty-hover-bg);
    color: var(--primary-color);
    border-style: solid;
    border-color: var(--slot-empty-hover-border);
    transform: scale(1.02);
}

.player-slot.empty.slot-selected {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover)) !important;
    color: white !important;
    border-color: transparent !important;
    box-shadow: 0 4px 15px rgba(5, 150, 105, 0.4);
    transform: scale(1.05);
    z-index: 2;
}

.player-slot.empty.slot-in-range {
    background-color: var(--light-accent) !important;
    border-color: var(--primary-color) !important;
    border-style: solid !important;
    transform: scale(1.02);
}

/* Booked Slot */
.player-slot.booked {
    background-color: var(--slot-booked-bg);
    color: var(--slot-booked-text);
    border: 1px solid var(--slot-booked-border);
    cursor: not-allowed;
}

/* My Booking */
.player-slot.booked.my-booking {
    background-color: var(--slot-my-bg);
    color: var(--slot-my-text);
    border: 1px solid var(--slot-my-border);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.05);
}

/* Guest Booking */
.player-slot.booked.guest {
    background-color: var(--slot-guest-bg);
    color: var(--slot-guest-text);
    border: 1px solid var(--slot-guest-border);
}

/* Tournament Slot */
.player-slot.tournament-slot {
    background: linear-gradient(135deg, #1e293b, #0f172a);
    color: #f8fafc;
    border: none;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

[data-theme="dark"] .player-slot.tournament-slot {
    background: linear-gradient(135deg, #000000, #0f172a);
}

/* Cancellable State */
.player-slot.booked.cancellable {
    cursor: pointer;
    position: relative;
    padding-right: 30px;
}

.player-slot.booked.cancellable:hover {
    background-color: #fee2e2 !important;
    color: #991b1b !important;
    border-color: #fca5a5 !important;
    transform: scale(1.02);
}

.player-stats {
    font-size: 0.8rem;
    line-height: 1.3;
    text-align: center;
}

.player-slot.booked.admin-view {
    border: 1px dashed #ef4444;
}

/* Utilities */
.view-section {
    animation: fadeInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* FullCalendar Dark Mode Tweaks */
[data-theme="dark"] .fc-theme-standard td,
[data-theme="dark"] .fc-theme-standard th {
    border-color: rgba(255,255,255,0.1);
}

[data-theme="dark"] .fc .fc-toolbar-title {
    color: var(--text-main);
}

[data-theme="dark"] .fc-col-header-cell-cushion,
[data-theme="dark"] .fc-daygrid-day-number {
    color: var(--text-main);
}

[data-theme="dark"] .fc-daygrid-day.fc-day-today {
    background-color: var(--fc-neutral-bg) !important;
}