:root {
    --bg-primary: #0b0d17;
    --bg-secondary: #111327;
    --bg-card: #1e1b2e;
    --bg-card-hover: #252240;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-start: #6366f1;
    --accent-end: #8b5cf6;
    --accent-cyan: #22d3ee;
    --accent-gradient: linear-gradient(135deg, var(--accent-start), var(--accent-end));
    --border-subtle: rgba(99, 102, 241, 0.15);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
    --shadow-card-hover: 0 8px 32px rgba(99, 102, 241, 0.2);
    --font-body: 'Inter', sans-serif;
    --font-heading: 'Poppins', sans-serif;
    --radius: 12px;
    --radius-sm: 8px;
}

*, *::before, *::after {
    box-sizing: border-box;
}

html, body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-primary);
}

a {
    color: var(--accent-cyan);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--accent-start);
}

.btn-primary {
    background: var(--accent-gradient);
    border: none;
    color: #fff;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
    background: var(--accent-gradient);
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
    box-shadow: 0 0 0 0.1rem var(--bg-primary), 0 0 0 0.25rem var(--accent-start);
}

.content {
    padding-top: 1.1rem;
}

h1:focus {
    outline: none;
}

/* --- Under Construction Badge --- */

.under-construction-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.15));
    border: 1px solid var(--border-subtle);
    border-radius: 50px;
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent-cyan);
    animation: pulse 2s ease-in-out infinite;
}

.under-construction-badge .fa-gear {
    animation: rotate 3s linear infinite;
    color: var(--accent-start);
}

/* --- Section Banner --- */

.construction-banner {
    text-align: center;
    padding: 2rem;
    margin: 2rem 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(34, 211, 238, 0.08));
    border: 1px dashed var(--border-subtle);
    border-radius: var(--radius);
}

.construction-banner i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.construction-banner h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.construction-banner p {
    color: var(--text-secondary);
    margin: 0;
}

/* --- Hero Section --- */

.hero {
    text-align: center;
    padding: 3rem 1rem 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease-out both;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-badge {
    animation: fadeInUp 0.8s ease-out 0.4s both;
    margin-bottom: 2rem;
}

/* --- Social Links --- */

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    font-size: 1.25rem;
    transition: all 0.3s ease;
}

.social-link:hover {
    color: #fff;
    background: var(--accent-gradient);
    border-color: transparent;
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
}

/* --- Preview Cards --- */

.preview-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    animation: fadeInUp 0.8s ease-out 0.8s both;
}

.card-preview {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    display: block;
    position: relative;
    overflow: hidden;
}

.card-preview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.card-preview:hover {
    background: var(--bg-card-hover);
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
}

.card-preview:hover::before {
    transform: scaleX(1);
}

.card-preview .card-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    display: block;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.card-preview h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.card-preview p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0;
}

.card-preview .coming-soon {
    display: inline-block;
    margin-top: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-cyan);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card-preview:hover .coming-soon {
    opacity: 1;
}

/* --- Page Header --- */

.page-header {
    text-align: center;
    padding: 2rem 0 1rem;
    animation: fadeInUp 0.6s ease-out both;
}

.page-header h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.page-header p {
    color: var(--text-secondary);
}

/* --- Project Placeholders --- */

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.6s ease-out both;
}

.project-card:nth-child(1) { animation-delay: 0.1s; }
.project-card:nth-child(2) { animation-delay: 0.2s; }
.project-card:nth-child(3) { animation-delay: 0.3s; }
.project-card:nth-child(4) { animation-delay: 0.4s; }
.project-card:nth-child(5) { animation-delay: 0.5s; }
.project-card:nth-child(6) { animation-delay: 0.6s; }

.project-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
}

.project-card .project-icon {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--accent-start);
}

.project-card h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.project-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.project-card .tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.25rem 0.6rem;
    border-radius: 50px;
    background: rgba(99, 102, 241, 0.12);
    color: var(--accent-start);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: rgba(11, 13, 23, 0.7);
    backdrop-filter: blur(2px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: var(--radius);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-overlay span {
    font-weight: 600;
    color: var(--accent-cyan);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* --- Skills / Competences --- */

.skills-section {
    margin-top: 2rem;
}

.skill-category {
    margin-bottom: 2.5rem;
    animation: fadeInUp 0.6s ease-out both;
}

.skill-category:nth-child(1) { animation-delay: 0.1s; }
.skill-category:nth-child(2) { animation-delay: 0.3s; }
.skill-category:nth-child(3) { animation-delay: 0.5s; }

.skill-category h2 {
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.skill-category h2 i {
    color: var(--accent-start);
}

.skill-bar-wrapper {
    margin-bottom: 1rem;
}

.skill-bar-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.4rem;
    font-size: 0.875rem;
}

.skill-bar-label span:first-child {
    color: var(--text-primary);
    font-weight: 500;
}

.skill-bar-label span:last-child {
    color: var(--text-muted);
}

.skill-bar {
    height: 8px;
    background: var(--bg-card);
    border-radius: 50px;
    overflow: hidden;
    border: 1px solid var(--border-subtle);
}

.skill-bar-fill {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 50px;
    width: 0;
    animation: fillBar 1.5s ease-out forwards;
}

.skill-bar-fill.delay-1 { animation-delay: 0.2s; }
.skill-bar-fill.delay-2 { animation-delay: 0.4s; }
.skill-bar-fill.delay-3 { animation-delay: 0.6s; }
.skill-bar-fill.delay-4 { animation-delay: 0.8s; }

/* --- Skills Blur Container --- */

.skills-blur-container {
    position: relative;
    margin-top: 2rem;
    border-radius: var(--radius);
    overflow: hidden;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.skills-blur-content {
    filter: blur(6px);
    opacity: 0.5;
    pointer-events: none;
    user-select: none;
    padding: 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
}

.skills-blur-overlay {
    position: absolute;
    inset: 0;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 0.5rem;
}

.skills-blur-overlay i {
    font-size: 3rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.skills-blur-overlay h2 {
    font-size: 1.5rem;
    margin: 0;
}

.skills-blur-overlay p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.95rem;
}

/* --- Contact Form --- */

.contact-wrapper {
    max-width: 600px;
    margin: 2rem auto;
    position: relative;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 2rem;
}

.contact-form .form-group {
    margin-bottom: 1.25rem;
}

.contact-form label {
    display: block;
    margin-bottom: 0.4rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.9rem;
    transition: border-color 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-start);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

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

.contact-form input:disabled,
.contact-form textarea:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.contact-form .btn-submit {
    width: 100%;
    padding: 0.85rem;
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-sm);
    color: #fff;
    font-weight: 600;
    font-size: 1rem;
    cursor: not-allowed;
    opacity: 0.5;
}

.contact-overlay {
    position: absolute;
    inset: 0;
    background: rgba(11, 13, 23, 0.6);
    backdrop-filter: blur(3px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    z-index: 10;
}

.contact-overlay i {
    font-size: 2.5rem;
    color: var(--accent-start);
    margin-bottom: 1rem;
}

.contact-overlay span {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.contact-overlay small {
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* --- Animations --- */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.85;
        transform: scale(1.03);
    }
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes fillBar {
    from { width: 0; }
    to { width: var(--fill-width); }
}

/* --- Utility --- */

.text-gradient {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --- Scrollbar --- */

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: rgba(99, 102, 241, 0.3);
    border-radius: 50px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(99, 102, 241, 0.5);
}

/* --- Blazor Error UI --- */

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

.blazor-error-boundary::after {
    content: "An error has occurred."
}

/* --- Responsive --- */

@media (max-width: 640px) {
    .hero {
        padding: 2rem 1rem 1rem;
    }

    .preview-cards {
        grid-template-columns: 1fr;
    }

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