/* css/style.css */
:root {
    --bg-color: #f0f2f5;
    --card-bg: #ffffff;
    --text-primary: #222222;
    --text-secondary: #7e7f82;

    /* Purple Theme */
    --accent-primary: #8967FD;
    --accent-text: #ffffff;
    --btn-primary-bg: #8967FD;
    --btn-primary-hover: #7b5ce0;

    --border-radius: 12px;
    --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.05);
    --font-family: 'YS Text', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    /* background: url(media/background2.png); */
    background-size: cover;
    background-repeat: no-repeat;

    font-family: var(--font-family);
    margin: 0;
    padding: 0;
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
}

/* Header */
.app-header {
    background-color: var(--card-bg);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 12px 20px;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 16px;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    margin: 0;
}

.week-navigation {
    display: flex;
    align-items: center;
    gap: 16px;

    /* margin-left: 10vh; */
    justify-self: center;
}

.current-week-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1.2;
}

#weekDates {
    font-size: 14px;
    font-weight: 500;
}

.week-badge {
    font-size: 11px;
    background: #eef2f4;
    padding: 2px 8px;
    border-radius: 10px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.nav-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    color: var(--text-secondary);
    transition: background 0.2s;
}

.nav-btn:hover {
    background-color: #f0f0f0;
    color: var(--text-primary);
}

/* Buttons */
.btn {
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    font-size: 14px;
    transition: transform 0.1s, opacity 0.2s;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--btn-primary-bg);
    color: var(--accent-text);
}

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

.btn-secondary {
    background-color: #eef2f4;
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: #e0e4e7;
}

.btn-text {
    background: none;
    color: var(--text-secondary);
}

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

.btn-block {
    width: 100%;
}

/* Auth Section */
.auth-section {
    display: flex;
    gap: 10px;
    align-items: center;
    justify-self: end;
}

.admin-controls {
    display: flex;
    gap: 10px;
}

/* Schedule Grid */
.schedule-container {
    max-width: 1200px;
    margin: 20px auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
    padding-bottom: 40px;
}

.day-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 16px;
    box-shadow: var(--shadow-soft);
    border: 1px solid transparent;
    transition: transform 0.2s, box-shadow 0.2s;
}

.day-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
}

.day-card.is-today {
    border-color: var(--btn-primary-bg);
    background-color: #fcfcff;
    /* Very subtle tint */
}

.day-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    border-bottom: 1px solid #eee;
    padding-bottom: 8px;
}

.day-name {
    font-weight: 700;
    font-size: 16px;
}

.day-date {
    color: var(--text-secondary);
    font-size: 14px;
}

.pair-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.pair-item {
    display: flex;
    padding: 8px 0;
    font-size: 14px;
    border-bottom: 1px solid #f9f9f9;
}

.pair-item:last-child {
    border-bottom: none;
}

.pair-number {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #eef2f4;
    border-radius: 6px;
    font-weight: 600;
    font-size: 12px;
    margin-right: 12px;
    flex-shrink: 0;
    color: var(--text-secondary);
}

.pair-subject {
    flex-grow: 1;
}

.pair-empty {
    color: #ccc;
    font-style: italic;
}

.pair-highlight {
    background-color: #eaddff;
    /* Purple highlight */
    border-radius: 4px;
    padding: 2px 4px;
    margin: -2px -4px;
}

.pair-cancelled {
    text-decoration: line-through;
    color: #999;
    opacity: 0.6;
}

/* Modals */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(2px);
    z-index: 900;
    display: none;
    opacity: 0;
    transition: opacity 0.3s;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 400px;
    background: var(--card-bg);
    z-index: 1000;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    padding: 24px;
    display: none;
    opacity: 0;
    transition: opacity 0.3s;
}

.modal.active,
.modal-backdrop.active {
    display: block;
    opacity: 1;
}

.modal-content h2 {
    margin-top: 0;
    margin-bottom: 20px;
    font-size: 20px;
}

.close-modal {
    position: absolute;
    top: 16px;
    right: 20px;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    color: var(--text-secondary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-family: inherit;
    font-size: 14px;
    box-sizing: border-box;
    /* Fix padding issue */
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--btn-primary-bg);
}

.error-message {
    color: #d32f2f;
    font-size: 13px;
    margin-top: 10px;
    display: none;
}

.success-message {
    color: #2e7d32;
    font-size: 13px;
    margin-top: 10px;
    display: none;
}

.hint {
    color: #999;
    font-size: 11px;
}

/* Loading */
.loading-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

/* --- Mobile Responsiveness --- */
@media (max-width: 768px) {
    .header-content {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .week-navigation {
        width: 100%;
        justify-content: space-between;
    }

    .auth-section {
        width: 100%;
        justify-content: center;
    }

    .btn-block-mobile {
        width: 100%;
    }

    .schedule-container {
        grid-template-columns: 1fr;
        /* Stack cards on mobile */
        padding: 0 16px;
    }

    .day-card {
        padding: 12px;
    }

    .logo {
        display: none;
        /* Optional: Hide logo to save space or keep it small */
    }

    /* Ensure desktop resources are hidden on mobile */
    .desktop-resources {
        display: none !important;
    }
}

/* --- Desktop Resources Menu --- */
@media (min-width: 769px) {
    .desktop-resources {
        display: block !important;
        position: relative;
        justify-self: start;
    }

    .resources-dropdown {
        position: relative;
        display: inline-block;
    }


    .resources-trigger {
        display: flex;
        align-items: center;
        background-color: #f0f2f5;
        padding: 8px 16px;
        border-radius: 8px;
        font-weight: 500;
    }

    .resources-trigger:hover {
        background-color: #e4e6eb;
    }

    .dropdown-content {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        background-color: var(--card-bg);
        min-width: 180px;
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
        border-radius: 12px;
        padding: 8px;
        z-index: 200;
        animation: fadeIn 0.2s ease;
        margin-top: 8px;
    }

    .resources-dropdown:hover .dropdown-content {
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    /* Bridge to prevent closing when moving mouse from trigger to content */
    .resources-dropdown::after {
        content: '';
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        height: 10px;
    }

    .resource-link {
        display: block;
        padding: 10px 16px;
        text-decoration: none;
        color: white;
        border-radius: 8px;
        font-size: 14px;
        font-weight: 500;
        transition: transform 0.1s, opacity 0.2s;
        text-align: center;
    }

    .resource-link:hover {
        opacity: 0.9;
        transform: translateY(-1px);
    }

    .resource-link:active {
        transform: scale(0.98);
    }

    /* Unique Colors */
    .link-oaip {
        /* background: linear-gradient(45deg, #8967FD, #CFC0FF); */
        background: url(media/button1.png);
        background-size: cover;
        background-repeat: no-repeat;
        /* Google Green */
    }

    .link-platform {
        /* background: linear-gradient(45deg, #0CD663, #BAE301); */
        background: url(media/button2.png);
        background-size: cover;
        background-repeat: no-repeat;
        /* Moodle Orange/Redish */
    }

    .link-site {
        /* background: linear-gradient(45deg, #D31F2D, #FA4351); */
        background: url(media/button3.png);
        background-size: cover;
        background-repeat: no-repeat;
        /* Blue */
    }

    @keyframes fadeIn {
        from {
            opacity: 0;
            transform: translateY(-5px);
        }

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