/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --color-primary: #00ADB5;
    --color-secondary: #FFD369;
    --color-dark: #222831;
    --color-dark-light: #393E46;
    --color-light: #EEEEEE;
    --color-white: #FFFFFF;
    --color-success: #4CAF50;
    --color-error: #F44336;
    --color-warning: #FF9800;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

/* Dark Theme Variables */
[data-theme="dark"] {
    --color-light: #393E46;
    --color-white: #222831;
    --color-dark: #EEEEEE;
    --color-dark-light: #CCCCCC;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-white);
    transition: background-color var(--transition-normal), color var(--transition-normal);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
.header {
    background-color: var(--color-dark);
    color: var(--color-white);
    padding: var(--spacing-md) 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.header__title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin: 0;
}

.header__controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer_link {
    color: #E6BD4A;
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    min-height: 40px;
}

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

.btn--primary:hover {
    background-color: #008B94;
    transform: translateY(-1px);
}

.btn--secondary {
    background-color: var(--color-light);
    color: var(--color-dark);
    border: 1px solid var(--color-dark-light);
}

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

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

.btn--danger:hover {
    background-color: #D32F2F;
}

.btn--icon {
    padding: var(--spacing-xs);
    min-width: 40px;
    min-height: 40px;
    border-radius: var(--radius-lg);
}

.btn__icon {
    font-size: var(--font-size-lg);
}

/* Theme Toggle */
.theme-toggle {
    background-color: transparent;
    color: var(--color-white);
    border: 1px solid var(--color-dark-light);
}

.theme-toggle:hover {
    background-color: var(--color-dark-light);
}

.theme-toggle__icon {
    font-size: var(--font-size-lg);
    transition: transform var(--transition-normal);
}

[data-theme="dark"] .theme-toggle__icon {
    transform: rotate(180deg);
}

/* Main Content */
.main {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

/* Stats Section */
.stats {
    margin-bottom: var(--spacing-xl);
}

.stats__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.stats__item {
    background-color: var(--color-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast);
}

.stats__item:hover {
    transform: translateY(-2px);
}

.stats__number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.stats__label {
    font-size: var(--font-size-sm);
    color: var(--color-dark-light);
    font-weight: 500;
}

/* Search Section */
.search-section {
    margin-bottom: var(--spacing-xl);
}

.search-section__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.search-box {
    display: flex;
    background-color: var(--color-white);
    border: 2px solid var(--color-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition-fast);
}

.search-box:focus-within {
    border-color: var(--color-primary);
}

.search-box__input {
    flex: 1;
    padding: var(--spacing-md);
    border: none;
    outline: none;
    font-size: var(--font-size-base);
    background-color: transparent;
    color: var(--color-dark);
}

.search-box__input::placeholder {
    color: var(--color-dark-light);
}

.search-box__btn {
    padding: var(--spacing-md);
    background-color: var(--color-primary);
    color: var(--color-white);
    border: none;
    cursor: pointer;
    font-size: var(--font-size-lg);
    transition: background-color var(--transition-fast);
}

.search-box__btn:hover {
    background-color: #008B94;
}

.filter-controls {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    flex-wrap: wrap;
}

.filter-select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-light);
    border-radius: var(--radius-md);
    background-color: var(--color-white);
    color: var(--color-dark);
    font-size: var(--font-size-sm);
    cursor: pointer;
}

/* Entries Section */
.entries-section__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.entries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

/* Entry Card */
.entry-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: 1px solid var(--color-light);
}

.entry-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.entry-card__image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background-color: var(--color-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-dark-light);
    font-size: var(--font-size-3xl);
}

.entry-card__content {
    padding: var(--spacing-lg);
}

.entry-card__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
}

.entry-card__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-dark);
    margin: 0;
    line-height: 1.3;
}

.entry-card__favorite {
    background: none;
    border: none;
    font-size: var(--font-size-lg);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.entry-card__favorite:hover {
    background-color: var(--color-light);
}

.entry-card__meta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.entry-card__date,
.entry-card__location {
    font-size: var(--font-size-sm);
    color: var(--color-dark-light);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.entry-card__notes {
    font-size: var(--font-size-sm);
    color: var(--color-dark);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Empty State */
.empty-state {
    display: none;
    text-align: center;
    padding: var(--spacing-xxl);
}

.empty-state.visible {
    display: block;
}

.empty-state__content {
    max-width: 400px;
    margin: 0 auto;
}

.empty-state__icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    display: block;
}

.empty-state__title {
    font-size: var(--font-size-2xl);
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

.empty-state__description {
    color: var(--color-dark-light);
    margin-bottom: var(--spacing-xl);
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.modal.active {
    display: flex;
}

.modal__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal__content {
    position: relative;
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease-out;
}

.modal__content--view {
    max-width: 800px;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-light);
}

.modal__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-dark);
    margin: 0;
}

.modal__actions {
    display: flex;
    gap: var(--spacing-xs);
}

.modal__close {
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    cursor: pointer;
    padding: var(--spacing-xs);
    color: var(--color-dark-light);
    transition: color var(--transition-fast);
}

.modal__close:hover {
    color: var(--color-dark);
}

/* Form Styles */
.entry-form {
    padding: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-light);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    background-color: var(--color-white);
    color: var(--color-dark);
    transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.location-input {
    display: flex;
    gap: var(--spacing-xs);
}

.location-input .form-input {
    flex: 1;
}

.location-btn {
    background-color: var(--color-secondary);
    color: var(--color-dark);
    border: 1px solid var(--color-secondary);
}

.location-btn:hover {
    background-color: #E6BD4A;
}

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

/* Photo Upload */
.photo-upload__input {
    display: none;
}

.photo-upload__area {
    border: 2px dashed var(--color-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.photo-upload__area:hover {
    border-color: var(--color-primary);
    background-color: rgba(0, 173, 181, 0.05);
}

.photo-upload__placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.photo-upload__icon {
    font-size: var(--font-size-3xl);
    color: var(--color-dark-light);
}

.photo-upload__text {
    color: var(--color-dark-light);
    font-size: var(--font-size-sm);
}

.photo-preview {
    position: relative;
    display: none;
}

.photo-preview.visible {
    display: block;
}

.photo-preview__img {
    width: 100%;
    max-height: 300px;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.photo-preview__remove {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background-color: var(--color-error);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    cursor: pointer;
    font-size: var(--font-size-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.character-count {
    text-align: right;
    font-size: var(--font-size-xs);
    color: var(--color-dark-light);
    margin-top: var(--spacing-xs);
}

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-light);
}

/* Entry View */
.entry-view {
    padding: var(--spacing-lg);
}

.entry-view__photo {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.entry-view__img {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.entry-view__meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-light);
}

.entry-view__date,
.entry-view__location {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-dark-light);
}

.entry-view__notes {
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-dark);
    white-space: pre-wrap;
}

/* Favorite Button */
.favorite-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

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

.favorite-btn__icon {
    font-size: var(--font-size-lg);
    transition: transform var(--transition-fast);
}

.favorite-btn.active .favorite-btn__icon {
    transform: scale(1.2);
}

/* Loading Spinner */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.loading.active {
    display: flex;
}

.loading__spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-light);
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background-color: var(--color-dark);
    color: var(--color-white);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-width: 300px;
    animation: toastSlideIn 0.3s ease-out;
}

.toast--success {
    background-color: var(--color-success);
}

.toast--error {
    background-color: var(--color-error);
}

.toast--warning {
    background-color: var(--color-warning);
}

@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Footer */
.footer {
    background-color: var(--color-dark);
    color: var(--color-white);
    padding: var(--spacing-md) 0;
    margin-top: auto;
}

.footer__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    text-align: center;
}

.footer__text {
    font-size: var(--font-size-sm);
    margin: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header__container {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .header__controls {
        width: 100%;
        justify-content: center;
    }
    
    .stats__container {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }
    
    .search-section__container {
        gap: var(--spacing-sm);
    }
    
    .filter-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .entries-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column-reverse;
    }
    
    .modal__content {
        margin: var(--spacing-sm);
        max-height: calc(100vh - 2rem);
    }
    
    .entry-view__meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .header__title {
        font-size: var(--font-size-xl);
    }
    
    .btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
    
    .stats__item {
        padding: var(--spacing-md);
    }
    
    .stats__number {
        font-size: var(--font-size-2xl);
    }
    
    .modal__content {
        margin: var(--spacing-xs);
        max-height: calc(100vh - 1rem);
    }
    
    .toast-container {
        top: 10px;
        right: 10px;
        left: 10px;
    }
    
    .toast {
        max-width: none;
    }
}

/* Print Styles */
@media print {
    .header,
    .search-section,
    .footer,
    .modal,
    .toast-container,
    .loading {
        display: none !important;
    }
    
    .entry-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus Styles */
.btn:focus,
.form-input:focus,
.form-textarea:focus,
.search-box__input:focus,
.filter-select:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --color-primary: #0066CC;
        --color-secondary: #FF6600;
        --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
        --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    }
}