/* CSS Custom Properties & Theming */
:root {
    /* Light Mode Variables */
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-primary: #2d3436;
    --text-secondary: #636e72;
    --accent-color: #6c5ce7;
    /* Violet */
    --accent-hover: #5649c0;
    --border-color: #dfe6e9;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.05);

    /* Layout */
    --container-width: 1200px;
    --header-height: 70px;
    --radius: 12px;

    /* Status Colors */
    --status-open-bg: #e6fcf5;
    --status-open-text: #0ca678;
    --status-closed-bg: #fff9db;
    --status-closed-text: #f59f00;
}

[data-theme="dark"] {
    /* Dark Mode Variables */
    --bg-color: #1e1e1e;
    --card-bg: #2d2d2d;
    --text-primary: #dfe6e9;
    --text-secondary: #b2bec3;
    --accent-color: #00cec9;
    /* Neon Blue/Cyan */
    --accent-hover: #00b8b4;
    --border-color: #444;
    --shadow: 0 4px 10px rgba(0, 0, 0, 0.3);

    --status-open-bg: rgba(12, 166, 120, 0.2);
    --status-open-text: #20c997;
    --status-closed-bg: rgba(245, 159, 0, 0.2);
    --status-closed-text: #ffec99;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
    line-height: 1.6;
}

/* Typography */
h1,
h2,
h3 {
    font-weight: 700;
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    cursor: pointer;
    border: none;
    font-family: inherit;
    transition: all 0.2s;
}

/* Header */
.header {
    height: var(--header-height);
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
}

.header-container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-color);
    letter-spacing: -0.5px;
}

.search-bar input {
    padding: 0.6rem 1rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-primary);
    width: 250px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Buttons */
.btn {
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.9rem;
}

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

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.btn-icon {
    background: none;
    color: var(--text-primary);
    padding: 0.4rem;
    border-radius: 50%;
}

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

.btn-google {
    background-color: #fff;
    color: #333;
    border: 1px solid #ddd;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.btn-google:hover {
    background-color: #f1f1f1;
}

.btn-lg {
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 4rem 1rem;
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.1) 0%, rgba(0, 206, 201, 0.1) 100%);
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.highlight {
    color: var(--accent-color);
}

.hero p {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Main Content & Filters */
.main-content {
    width: 90%;
    max-width: var(--container-width);
    margin: 2rem auto;
    position: relative;
    /* For transitioning */
    min-height: 80vh;
}

.filter-container {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.filter-btn {
    background: var(--card-bg);
    color: var(--text-secondary);
    padding: 0.5rem 1.2rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    transition: all 0.2s;
}

.filter-btn.active,
.filter-btn:hover {
    background: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
}

/* Event Grid */
.event-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.event-card {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
    cursor: pointer;
}

.event-card:hover {
    transform: translateY(-5px);
}

.card-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    background-color: #ddd;
}

.card-content {
    padding: 1.5rem;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.card-date {
    background-color: rgba(108, 92, 231, 0.1);
    color: var(--accent-color);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-weight: 600;
}

.card-title {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.card-organizer {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.card-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chip {
    font-size: 0.8rem;
    background: var(--bg-color);
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    color: var(--text-secondary);
}

/* Event Detail View */
.event-detail-view {
    background-color: var(--bg-color);
    animation: fadeIn 0.3s ease;
}

.back-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.detail-container {
    background: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.detail-header {
    position: relative;
    border-bottom: 1px solid var(--border-color);
}

.detail-poster {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.detail-title-block {
    padding: 2rem;
    position: relative;
}

.badge-date {
    background-color: var(--accent-color);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    display: inline-block;
}

.detail-organizer {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.badge-status {
    position: absolute;
    top: 2rem;
    right: 2rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
}

.status-open {
    background-color: var(--status-open-bg);
    color: var(--status-open-text);
}

.status-closed {
    background-color: var(--status-closed-bg);
    color: var(--status-closed-text);
}

.detail-body {
    padding: 2rem;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.detail-info h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.detail-info p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    white-space: pre-line;
}

.meta-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.meta-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.meta-item svg {
    color: var(--accent-color);
    flex-shrink: 0;
}

.meta-item strong {
    display: block;
    margin-bottom: 0.2rem;
    color: var(--text-primary);
}

.meta-item p {
    margin-bottom: 0;
}

.detail-actions {
    background: var(--bg-color);
    padding: 1.5rem;
    border-radius: var(--radius);
    text-align: center;
    align-self: start;
}

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

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

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.show {
    display: flex;
    opacity: 1;
}

.modal-content {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius);
    width: 90%;
    max-width: 500px;
    position: relative;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal.show .modal-content {
    transform: scale(1);
}

.close-btn {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.8rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-primary);
}

.full-width {
    width: 100%;
}

.divider {
    text-align: center;
    margin: 1.5rem 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    position: relative;
}

/* Utils */
.hidden {
    display: none !important;
}

/* Responsive */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 1rem;
        height: auto;
        padding: 1rem 0;
    }

    .header {
        height: auto;
    }

    .search-bar input {
        width: 100%;
    }

    .event-grid {
        grid-template-columns: 1fr;
    }

    .detail-body {
        grid-template-columns: 1fr;
    }

    .badge-status {
        position: static;
        display: inline-block;
        margin-top: 1rem;
    }
}