/* ============================================
   GLOBAL STYLES
   ============================================ */

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

:root {
    /* Color palette - feel free to customize! */
    --primary-color: #4285f4;
    --primary-hover: #3367d6;
    --secondary-color: #5f6368;
    --danger-color: #d93025;
    --success-color: #0f9d58;
    --background: #ffffff;
    --surface: #f8f9fa;
    --text-primary: #202124;
    --text-secondary: #5f6368;
    --border-color: #dadce0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    --shadow-hover: 0 3px 6px rgba(0, 0, 0, 0.16), 0 3px 6px rgba(0, 0, 0, 0.23);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--surface);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
    box-shadow: var(--shadow-hover);
}

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

.btn-secondary:hover:not(:disabled) {
    background: #3c4043;
    box-shadow: var(--shadow-hover);
}

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

.btn-danger:hover:not(:disabled) {
    background: #b71c1c;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* ============================================
   FORM ELEMENTS
   ============================================ */

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input[type='text'],
.form-group input[type='email'],
.form-group input[type='password'],
.form-group input[type='number'],
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
    font-family: inherit;
}

.form-group input[type='file'] {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: white;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(66, 133, 244, 0.1);
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: var(--text-secondary);
    font-size: 12px;
}

.input-with-button {
    display: flex;
    gap: 10px;
}

.input-with-button input {
    flex: 1;
}

/* ============================================
   LOGIN PAGE
   ============================================ */

.login-box {
    max-width: 400px;
    margin: 60px auto;
    background: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.login-box h1 {
    text-align: center;
    margin-bottom: 10px;
    font-size: 28px;
}

.subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.error-message {
    background: #fce4ec;
    color: #c62828;
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 15px;
    font-size: 14px;
}

.success-message {
    background: #e8f5e9;
    color: #2e7d32;
    padding: 20px;
    border-radius: 4px;
    margin-top: 20px;
}

.success-message p {
    margin: 5px 0;
}

.success-message a {
    color: var(--primary-color);
    word-break: break-all;
}

.info-text {
    text-align: center;
    margin-top: 20px;
    color: var(--text-secondary);
    font-size: 13px;
}

/* ============================================
   ADMIN DASHBOARD
   ============================================ */

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.admin-header h1 {
    font-size: 32px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-info span {
    color: var(--text-secondary);
    font-size: 14px;
}

.admin-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

@media (max-width: 968px) {
    .admin-grid {
        grid-template-columns: 1fr;
    }
}

.admin-section {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.admin-section h2 {
    margin-bottom: 20px;
    font-size: 24px;
}

/* ============================================
   IMAGE PREVIEW
   ============================================ */

#imagePreview img,
#editImagePreview img {
    max-width: 100%;
    max-height: 300px;
    display: block;
    margin: 15px auto;
    border-radius: 4px;
    box-shadow: var(--shadow);
}

/* ============================================
   UPLOAD PROGRESS
   ============================================ */

#uploadProgress {
    margin: 20px 0;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    transition: width 0.3s;
    width: 0%;
}

#progressText {
    text-align: center;
    margin-top: 10px;
    color: var(--text-secondary);
    font-size: 14px;
}

/* ============================================
   PHOTO LIST
   ============================================ */

.filter-controls {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.filter-controls input {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.photo-list {
    max-height: 600px;
    overflow-y: auto;
}

.photo-card {
    background: var(--surface);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 15px;
    display: flex;
    gap: 15px;
    transition: box-shadow 0.2s;
}

.photo-card:hover {
    box-shadow: var(--shadow);
}

.photo-card img {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 4px;
}

.photo-info {
    flex: 1;
}

.photo-info p {
    margin: 5px 0;
    font-size: 14px;
}

.photo-meta {
    color: var(--text-secondary);
    font-size: 12px;
}

.photo-actions {
    display: flex;
    gap: 8px;
    margin-top: 10px;
    flex-wrap: wrap;
}

.loading,
.info,
.error {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

/* ============================================
   MODAL
   ============================================ */

.modal {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    padding: 30px;
    border-radius: 8px;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-content h2 {
    margin-bottom: 20px;
}

.close {
    position: absolute;
    right: 15px;
    top: 15px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: var(--text-secondary);
}

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

.modal-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

/* ============================================
   PUBLIC VIEWER PAGE
   ============================================ */

.viewer-page {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
}

.viewer-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.loading-state {
    text-align: center;
    color: white;
}

.spinner {
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top: 4px solid white;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

#photoDisplay {
    opacity: 0;
    transition: opacity 0.5s;
}

.photo-wrapper {
    text-align: center;
    margin-bottom: 20px;
}

.photo-wrapper img {
    max-width: 100%;
    max-height: 70vh;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.caption-wrapper {
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.caption-wrapper p {
    font-size: 18px;
    line-height: 1.6;
    color: var(--text-primary);
}

.error-state {
    text-align: center;
    color: white;
    padding: 40px;
}

.error-state h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.error-state p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.7);
}

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

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    .admin-header {
        flex-direction: column;
        gap: 15px;
    }

    .admin-section {
        padding: 20px;
    }

    .photo-card {
        flex-direction: column;
    }

    .photo-card img {
        width: 100%;
        height: 200px;
    }

    .modal-content {
        width: 95%;
        padding: 20px;
    }
}