:root {
    --color-bg: #ffffff;
    --color-text: #1a1a1a;
    --color-text-light: #666666;
    --color-border: #e5e5e5;
    --color-accent: #6b7280;
    --color-primary: #1a1a1a;
    --color-primary-hover: #333333;
    --color-error: #dc2626;
    --color-success: #16a34a;
    --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);
    --radius: 8px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.navbar {
    position: sticky;
    top: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
    transition: color 0.15s ease;
}

.nav-logo:hover {
    color: var(--color-primary-hover);
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    color: var(--color-text-light);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color 0.15s ease;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text);
}

.btn-link {
    padding: 0;
    border: none;
    background: none;
}

main {
    min-height: calc(100vh - 200px);
}

.hero {
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

.hero-content {
    margin-bottom: var(--spacing-lg);
}

.profile-photo-wrapper {
    display: inline-block;
    margin-bottom: var(--spacing-md);
}

.profile-photo {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 300;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    font-weight: 400;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.section {
    padding: var(--spacing-2xl) 0;
}

.section-light {
    background-color: #fafafa;
}

.section-hero {
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.section-title {
    font-size: 2rem;
    font-weight: 500;
    margin-bottom: var(--spacing-xl);
    text-align: center;
    letter-spacing: -0.01em;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
}

.page-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    transition: all 0.15s ease;
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.card-text {
    color: var(--color-text-light);
    line-height: 1.6;
}

.chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
}

.chip {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--color-text);
    transition: all 0.15s ease;
}

.chip:hover {
    border-color: var(--color-text);
    background: #f9f9f9;
}

.contact-content {
    text-align: center;
    max-width: 500px;
    margin: 0 auto;
}

.contact-text {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.125rem;
    color: var(--color-text);
    text-decoration: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: all 0.15s ease;
}

.contact-link:hover {
    border-color: var(--color-text);
    box-shadow: var(--shadow-sm);
}

.contact-icon {
    width: 24px;
    height: 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.15s ease;
    font-family: inherit;
}

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

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

.btn-secondary {
    background: var(--color-bg);
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-text);
    background: #f9f9f9;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.btn-small {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.875rem;
}

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

.btn-danger:hover {
    background: #b91c1c;
    border-color: #b91c1c;
}

.btn-icon {
    width: 18px;
    height: 18px;
}

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

.portfolio-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.15s ease;
}

.portfolio-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.portfolio-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.portfolio-card-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: #f5f5f5;
}

.portfolio-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.portfolio-card-content {
    padding: var(--spacing-lg);
}

.portfolio-card-title {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.portfolio-card-description {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.portfolio-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tag {
    display: inline-block;
    padding: 0.25rem var(--spacing-sm);
    background: #f5f5f5;
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--color-text-light);
}

.back-link {
    display: inline-block;
    color: var(--color-text-light);
    text-decoration: none;
    margin-bottom: var(--spacing-lg);
    transition: color 0.15s ease;
}

.back-link:hover {
    color: var(--color-text);
}

.portfolio-detail {
    max-width: 800px;
    margin: 0 auto;
}

.portfolio-detail-image {
    width: 100%;
    margin-bottom: var(--spacing-xl);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.portfolio-detail-image img {
    width: 100%;
    height: auto;
    display: block;
}

.portfolio-detail-header {
    margin-bottom: var(--spacing-md);
}

.portfolio-detail-title {
    font-size: 2.5rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
}

.portfolio-detail-meta {
    color: var(--color-text-light);
    font-size: 0.9375rem;
}

.portfolio-detail-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.portfolio-detail-description {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text);
}

.portfolio-detail-description p {
    margin-bottom: var(--spacing-md);
}

.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-text-light);
}

.footer {
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-2xl);
    text-align: center;
    color: var(--color-text-light);
    font-size: 0.875rem;
}

.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--spacing-md);
}

.login-box {
    width: 100%;
    max-width: 400px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.login-title {
    font-size: 1.75rem;
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 0;
}

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

.login-form .form-group:last-of-type {
    margin-bottom: var(--spacing-lg);
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.admin-header > div {
    flex: 1;
}

.admin-table-container {
    overflow-x: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table thead {
    background: #f9f9f9;
}

.admin-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--color-text-light);
    border-bottom: 1px solid var(--color-border);
}

.admin-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.admin-table tbody tr:last-child td {
    border-bottom: none;
}

.admin-table tbody tr:hover {
    background: #fafafa;
}

.draggable-row {
    cursor: move;
}

.draggable-row.drag-over {
    border-top: 2px solid var(--color-primary);
    background: #f0f0f0;
}

.drag-handle {
    cursor: grab;
    user-select: none;
    color: var(--color-text-light);
    font-size: 1.2rem;
    text-align: center;
    padding: var(--spacing-md) !important;
}

.drag-handle:active {
    cursor: grabbing;
}

.draggable-row:active {
    cursor: grabbing;
}

.admin-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.admin-form {
    max-width: 700px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--spacing-xl);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    font-size: 0.9375rem;
    color: var(--color-text);
    width: 100%;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="date"],
.form-group input[type="file"],
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.9375rem;
    font-family: inherit;
    transition: border-color 0.15s ease;
    box-sizing: border-box;
}

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

.form-group.has-error input,
.form-group.has-error textarea {
    border-color: var(--color-error);
}

.error-message {
    display: block;
    color: var(--color-error);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

.form-hint {
    display: block;
    color: var(--color-text-light);
    font-size: 0.8125rem;
    margin-top: var(--spacing-xs);
    font-style: italic;
}

.admin-menu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.admin-menu-card {
    display: block;
    padding: var(--spacing-xl);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    text-decoration: none;
    color: inherit;
    transition: all 0.15s ease;
}

.admin-menu-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--color-text);
}

.admin-menu-card-title {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.admin-menu-card-text {
    color: var(--color-text-light);
    line-height: 1.6;
}

.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius);
    margin-bottom: var(--spacing-lg);
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.current-image {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-md);
    background: #f9f9f9;
    border-radius: var(--radius);
}

.preview-image-wrapper {
    position: relative;
    display: inline-block;
    margin-top: var(--spacing-sm);
}

.preview-image {
    max-width: 200px;
    height: auto;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    display: block;
}

.delete-image-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(220, 38, 38, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.15s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    padding: 0;
}

.delete-image-btn:hover {
    background: rgba(185, 28, 28, 1);
    transform: scale(1.1);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.delete-image-btn:active {
    transform: scale(0.95);
}

.delete-image-btn svg {
    width: 18px;
    height: 18px;
}

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.text-center {
    text-align: center;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .nav-links {
        gap: var(--spacing-md);
    }
    
    .nav-link {
        font-size: 0.875rem;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .admin-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .admin-table {
        font-size: 0.875rem;
    }
    
    .admin-table th,
    .admin-table td {
        padding: var(--spacing-sm);
    }
    
    .profile-photo {
        width: 150px;
        height: 150px;
    }
}

.settings-section {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.profile-photo-admin {
    margin-top: var(--spacing-md);
}

.profile-photo-preview-wrapper {
    position: relative;
    display: inline-block;
    margin-bottom: var(--spacing-lg);
}

.profile-photo-preview {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    display: block;
}

.profile-photo-preview-wrapper:hover .photo-controls {
    opacity: 1;
}

.photo-controls {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    opacity: 0;
    transition: opacity 0.15s ease;
}

.photo-control-btn {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--spacing-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
    color: var(--color-text);
}

.photo-control-btn:hover {
    background: var(--color-error);
    color: var(--color-bg);
    border-color: var(--color-error);
}

.profile-photo-placeholder {
    padding: var(--spacing-lg);
    text-align: center;
    color: var(--color-text-light);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius);
    margin-bottom: var(--spacing-lg);
}

.upload-form {
    margin-top: var(--spacing-md);
}

.error-container {
    text-align: center;
    padding: var(--spacing-2xl) 0;
}

.error-title {
    font-size: 3rem;
    font-weight: 300;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.error-message {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
}

.cropper-container {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.cropper-wrapper {
    max-width: 600px;
    margin: 0 auto;
    background: #f9f9f9;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--spacing-md);
}

.cropper-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-md);
}

.formatted-content {
    line-height: 1.8;
}

.formatted-content p {
    margin-bottom: var(--spacing-md);
}

.formatted-content p:last-child {
    margin-bottom: 0;
}

.formatted-content strong,
.formatted-content b {
    font-weight: 600;
    color: var(--color-text);
}

.formatted-content em,
.formatted-content i {
    font-style: italic;
}

.formatted-content ul,
.formatted-content ol {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-lg);
}

.formatted-content ul {
    list-style-type: disc;
}

.formatted-content ol {
    list-style-type: decimal;
}

.formatted-content li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.7;
}

.formatted-content ul ul,
.formatted-content ol ol,
.formatted-content ul ol,
.formatted-content ol ul {
    margin-top: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
}

.formatted-content blockquote {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-md);
    border-left: 3px solid var(--color-border);
    color: var(--color-text-light);
    font-style: italic;
}

.formatted-content h1,
.formatted-content h2,
.formatted-content h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
    line-height: 1.3;
}

.formatted-content h1 {
    font-size: 2rem;
}

.formatted-content h2 {
    font-size: 1.5rem;
}

.formatted-content h3 {
    font-size: 1.25rem;
}

.formatted-content h1:first-child,
.formatted-content h2:first-child,
.formatted-content h3:first-child {
    margin-top: 0;
}

@media (max-width: 768px) {
    .formatted-content ul,
    .formatted-content ol {
        padding-left: var(--spacing-md);
    }
    
    .formatted-content h1 {
        font-size: 1.75rem;
    }
    
    .formatted-content h2 {
        font-size: 1.375rem;
    }
    
    .formatted-content h3 {
        font-size: 1.125rem;
    }
}