/* ============================================
   SNACKIFY - GLOBAL STYLES
   ============================================ */

:root {
    --red: #E63946;
    --orange: #F77F00;
    --yellow: #FFD166;
    --cream: #FFF8F0;
    --dark-text: #2B2D42;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 8px 16px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--cream);
    color: var(--dark-text);
    line-height: 1.6;
    position: relative;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Background Collage */
.background-collage {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: 
        linear-gradient(rgba(43, 45, 66, 0.7), rgba(43, 45, 66, 0.7)),
        url('https://images.unsplash.com/photo-1504674900247-0877df9cc836?w=1920&q=80') center/cover,
        url('https://images.unsplash.com/photo-1495521821757-a1efb6729352?w=1920&q=80') center/cover,
        url('https://images.unsplash.com/photo-1509440159596-0249088772ff?w=1920&q=80') center/cover;
    background-blend-mode: overlay;
    filter: blur(3px);
    opacity: 0.3;
    background-size: cover, 33% 100%, 33% 100%, 33% 100%;
    background-position: center, left, center, right;
}

/* ============================================
   NAVIGATION BAR
   ============================================ */

.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--red);
    margin: 0;
    white-space: nowrap;
}

.nav-search {
    flex: 1;
    min-width: 200px;
}

.nav-search input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 25px;
    font-size: 1rem;
    transition: var(--transition);
}

.nav-search input:focus {
    outline: none;
    border-color: var(--orange);
    box-shadow: 0 0 0 3px rgba(247, 127, 0, 0.1);
}

.nav-filters {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.nav-filters select {
    padding: 0.75rem 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 25px;
    font-size: 1rem;
    background: white;
    cursor: pointer;
    transition: var(--transition);
}

.nav-filters select:focus {
    outline: none;
    border-color: var(--orange);
}

.btn-primary {
    padding: 0.75rem 1.5rem;
    background: var(--orange);
    color: white;
    border: none;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary:hover {
    background: var(--red);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.nav-user {
    display: flex;
    align-items: center;
}

.user-icon {
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.user-icon:hover {
    transform: scale(1.1);
}

/* ============================================
   MAIN CONTENT
   ============================================ */

.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    position: relative;
    z-index: 1;
}

/* Leaderboard Section */
.leaderboard-section {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.leaderboard-section h2 {
    color: var(--red);
    margin-bottom: 1.5rem;
    font-size: 2rem;
}

.leaderboard-tabs {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 25px;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn:hover {
    border-color: var(--orange);
    transform: translateY(-2px);
}

.tab-btn.active {
    background: var(--orange);
    color: white;
    border-color: var(--orange);
}

.leaderboard-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.leaderboard-item {
    background: var(--cream);
    padding: 1rem;
    border-radius: 15px;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
}

.leaderboard-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.leaderboard-rank {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--orange);
    min-width: 40px;
}

.leaderboard-info {
    flex: 1;
}

.leaderboard-info h3 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.leaderboard-info p {
    font-size: 0.9rem;
    color: #666;
}

.leaderboard-rating {
    font-size: 1.2rem;
    color: var(--yellow);
}

/* Snacks Section */
.snacks-section h2 {
    color: var(--red);
    margin-bottom: 1.5rem;
    font-size: 2rem;
}

.snacks-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

/* Responsive Grid */
@media (min-width: 768px) {
    .snacks-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .snacks-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Snack Card */
.snack-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
}

.snack-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-hover);
}

.snack-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: var(--cream);
}

.snack-card-content {
    padding: 1.25rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.snack-card-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 0.5rem;
}

.snack-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark-text);
    margin: 0;
    flex: 1;
}

.snack-card-country {
    font-size: 0.9rem;
    color: var(--orange);
    font-weight: 600;
    margin-left: 0.5rem;
}

.snack-card-description {
    font-size: 0.95rem;
    color: #666;
    margin-bottom: 1rem;
    flex: 1;
    line-height: 1.5;
}

.snack-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tag {
    padding: 0.25rem 0.75rem;
    background: var(--yellow);
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--dark-text);
}

.snack-card-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.stars {
    color: var(--yellow);
}

.snack-card-actions {
    display: flex;
    gap: 0.75rem;
}

.btn-secondary {
    flex: 1;
    padding: 0.6rem 1rem;
    background: white;
    color: var(--orange);
    border: 2px solid var(--orange);
    border-radius: 15px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--orange);
    color: white;
    transform: translateY(-2px);
}

.snack-card-photographer {
    margin-top: 0.75rem;
    font-size: 0.75rem;
    color: #999;
    text-align: center;
    padding-top: 0.75rem;
    border-top: 1px solid #eee;
}

/* ============================================
   MODALS
   ============================================ */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    overflow-y: auto;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 20px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease;
}

.modal-large {
    max-width: 900px;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 2px solid #eee;
}

.modal-header h2 {
    color: var(--red);
    margin: 0;
    font-size: 1.75rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: #999;
    cursor: pointer;
    transition: var(--transition);
    line-height: 1;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--red);
    transform: rotate(90deg);
}

.modal-body {
    padding: 1.5rem;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-text);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--orange);
    box-shadow: 0 0 0 3px rgba(247, 127, 0, 0.1);
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: #666;
    font-size: 0.85rem;
}

/* Auth toggle buttons */
.auth-toggle {
    display: inline-flex;
    background: #f5f5f5;
    padding: 0.25rem;
    border-radius: 999px;
    border: 1px solid #e0e0e0;
    gap: 0.25rem;
}

.auth-toggle-btn {
    border: none;
    background: transparent;
    padding: 0.5rem 1.25rem;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 600;
    color: #666;
    cursor: pointer;
    transition: var(--transition);
}

.auth-toggle-btn.active {
    background: var(--orange);
    color: #fff;
    box-shadow: var(--shadow);
}

.rating-input-group {
    margin-bottom: 1.5rem;
}

.rating-input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.star-rating {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.star {
    font-size: 2rem;
    color: #ddd;
    cursor: pointer;
    transition: var(--transition);
}

.star:hover,
.star.active {
    color: var(--yellow);
    transform: scale(1.1);
}

.rating-input-group input[type="number"] {
    width: 100px;
}

/* Details Modal */
.details-hero {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 15px;
    margin-bottom: 1.5rem;
}

.details-info {
    margin-bottom: 1.5rem;
}

.details-info h3 {
    color: var(--red);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.details-info p {
    color: #666;
    line-height: 1.8;
}

.rating-breakdown {
    margin: 1.5rem 0;
}

.rating-bar {
    margin-bottom: 1rem;
}

.rating-bar-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.rating-bar-fill {
    height: 25px;
    background: var(--yellow);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark-text);
    font-weight: 600;
    transition: width 0.5s ease;
}

.comments-section {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 2px solid #eee;
}

.comments-section h3 {
    color: var(--red);
    margin-bottom: 1rem;
}

.comment-form {
    margin-bottom: 1.5rem;
}

.comment-form textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-family: inherit;
    margin-bottom: 0.5rem;
}

.comment {
    background: var(--cream);
    padding: 1rem;
    border-radius: 10px;
    margin-bottom: 1rem;
}

.comment-author {
    font-weight: 600;
    color: var(--orange);
    margin-bottom: 0.25rem;
}

.comment-text {
    color: #666;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 767px) {
    .nav-container {
        flex-direction: column;
        align-items: stretch;
    }

    .nav-search {
        width: 100%;
    }

    .nav-filters {
        width: 100%;
        flex-direction: column;
    }

    .nav-filters select,
    .btn-primary {
        width: 100%;
    }

    .snacks-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .modal-content {
        margin: 1rem;
        max-height: 95vh;
    }

    .leaderboard-tabs {
        flex-direction: column;
    }

    .tab-btn {
        width: 100%;
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

*:focus {
    outline: 2px solid var(--orange);
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Loading State */
.loading {
    text-align: center;
    padding: 3rem;
    color: var(--orange);
    font-size: 1.5rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: #666;
}

.empty-state h3 {
    color: var(--red);
    margin-bottom: 1rem;
}