:root {
    --primary-bg: #0F172A;
    --secondary-bg: #1E293B;
    --accent-indigo: #4F46E5;
    --accent-lime: #A3E635;
    --text-color: #E2E8F0;
    --text-secondary: #94A3B8;
    --border-color: #334155;
}

/* ── Base ── */
body {
    font-family: 'Inter', sans-serif;
    background-color: var(--primary-bg);
    color: var(--text-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Space Grotesk', sans-serif;
    color: var(--text-color);
    font-weight: 700;
}

/* ── Floating Triangles ── */
.triangle-bg {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}
.tri {
    position: absolute;
    bottom: -40px;
    opacity: 0;
    animation: floatUp linear infinite;
}
@keyframes floatUp {
    0%   { transform: translateY(0) rotate(0deg);   opacity: 0; }
    10%  { opacity: 0.6; }
    90%  { opacity: 0.3; }
    100% { transform: translateY(-110vh) rotate(360deg); opacity: 0; }
}

/* ── Utility ── */
.gradient-text {
    background: linear-gradient(to right, var(--accent-indigo), var(--accent-lime));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.scroll-smooth { scroll-behavior: smooth; }

/* ── Buttons ── */
.btn-primary {
    background: linear-gradient(to right, var(--accent-indigo), var(--accent-lime));
    color: var(--primary-bg);
    padding: 0.75rem 1.75rem;
    border-radius: 9999px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(163, 230, 53, 0.3);
}
.btn-primary:hover {
    opacity: 0.9;
    box-shadow: 0 6px 20px rgba(163, 230, 53, 0.4);
    transform: translateY(-2px);
}

.btn-secondary {
    background: none;
    border: 2px solid var(--accent-lime);
    color: var(--accent-lime);
    padding: 0.75rem 1.75rem;
    border-radius: 9999px;
    font-weight: 600;
    transition: all 0.3s ease;
}
.btn-secondary:hover {
    background-color: rgba(163, 230, 53, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(163, 230, 53, 0.2);
}

/* ── Card ── */
.card {
    background-color: var(--secondary-bg);
    border-radius: 1.5rem;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--accent-lime);
    transition: all 0.3s ease;
}
.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(163, 230, 53, 0.4);
    border-color: var(--accent-indigo);
}

/* ── Nav ── */
.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s ease;
}
.nav-link:hover, .nav-link.active {
    color: var(--accent-lime);
}

/* ── Project Thumbnail ── */
.project-thumbnail {
    position: relative;
    overflow: hidden;
    border-radius: 1rem;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border-color);
}
.project-thumbnail:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
}
.project-thumbnail img { transition: transform 0.5s ease; }
.project-thumbnail:hover img { transform: scale(1.05); }
.project-overlay {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), rgba(0,0,0,0));
    color: white;
    padding: 1rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.project-thumbnail:hover .project-overlay { opacity: 1; }

/* ── Tabs ── */
.tab-button {
    background-color: var(--primary-bg);
    color: var(--text-color);
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}
.tab-button:hover { background-color: var(--secondary-bg); }
.tab-button.active {
    background: linear-gradient(to right, var(--accent-indigo), var(--accent-lime));
    color: var(--primary-bg);
    box-shadow: 0 4px 15px rgba(163, 230, 53, 0.3);
    border-color: transparent;
}

/* ── Modal ── */
.modal {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.modal.open { opacity: 1; visibility: visible; }
.modal-content {
    background-color: var(--primary-bg);
    border-radius: 1.5rem;
    max-width: 90%;
    max-height: 90%;
    overflow-y: auto;
    padding: 2.5rem;
    position: relative;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.6);
    transform: scale(0.95);
    transition: transform 0.3s ease;
    border: 1px solid var(--border-color);
}
.modal.open .modal-content { transform: scale(1); }
.modal-close {
    position: absolute;
    top: 1.5rem; right: 1.5rem;
    background: none;
    border: none;
    font-size: 1.8rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s ease;
}
.modal-close:hover { color: var(--accent-lime); }

/* ── Fade-in ── */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── Carousel ── */
.carousel-container { position: relative; overflow: hidden; }
.carousel-wrapper { display: flex; transition: transform 0.5s ease-in-out; }
.carousel-item { flex: 0 0 100%; scroll-snap-align: start; }
.carousel-button {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(15, 23, 42, 0.7);
    color: var(--text-color);
    border: none;
    padding: 0.75rem;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: background-color 0.3s ease, color 0.3s ease;
}
.carousel-button:hover { background-color: var(--accent-indigo); color: var(--primary-bg); }
.carousel-button.left { left: 1rem; }
.carousel-button.right { right: 1rem; }

/* ── Social Icons ── */
.social-icon {
    color: var(--text-secondary);
    transition: color 0.3s ease, transform 0.3s ease;
}
.social-icon:hover { color: var(--accent-lime); transform: translateY(-3px); }
.hero-social-icons .social-icon { font-size: 1.75rem; margin: 0 0.75rem; }

/* ── Marquee ── */
.marquee-inner {
    display: flex;
    gap: 20px;
    width: max-content;
    animation: scrollLeft 18s linear infinite;
}
@keyframes scrollLeft {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}
.skill-pill {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: var(--primary-bg);
    border: 1px solid var(--accent-lime);
    border-radius: 9999px;
    padding: 10px 24px;
    white-space: nowrap;
    transition: border-color 0.3s, box-shadow 0.3s;
}
.skill-pill:hover {
    border-color: var(--accent-indigo);
    box-shadow: 0 0 14px rgba(163, 230, 53, 0.25);
}
.skill-pill i { color: var(--accent-lime); font-size: 1.3rem; }
.skill-pill span { color: var(--text-color); font-weight: 600; font-size: 1rem; }

/* ── Certificate Cards ── */
.cert-card {
    background-color: var(--secondary-bg);
    border-radius: 1.5rem;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.4s ease;
    position: relative;
}
.cert-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(to right, var(--accent-indigo), var(--accent-lime));
    opacity: 0;
    transition: opacity 0.3s ease;
}
.cert-card:hover::before { opacity: 1; }
.cert-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 50px rgba(79, 70, 229, 0.3);
    border-color: var(--accent-indigo);
}
.cert-img-wrap {
    position: relative;
    overflow: hidden;
    height: 200px;
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
}
.cert-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease, filter 0.3s ease;
    filter: brightness(0.85);
}
.cert-card:hover .cert-img-wrap img {
    transform: scale(1.06);
    filter: brightness(1);
}
.cert-badge {
    position: absolute;
    top: 12px; right: 12px;
    background: linear-gradient(to right, var(--accent-indigo), var(--accent-lime));
    color: var(--primary-bg);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.cert-body { padding: 1.5rem; }
.cert-icon-wrap {
    width: 44px; height: 44px;
    border-radius: 12px;
    background: rgba(79, 70, 229, 0.15);
    border: 1px solid rgba(79, 70, 229, 0.3);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 1rem;
    transition: background 0.3s ease;
}
.cert-card:hover .cert-icon-wrap {
    background: rgba(163, 230, 53, 0.15);
    border-color: rgba(163, 230, 53, 0.4);
}
.cert-icon-wrap i { font-size: 1.3rem; color: var(--accent-indigo); transition: color 0.3s ease; }
.cert-card:hover .cert-icon-wrap i { color: var(--accent-lime); }
.cert-title { font-size: 1.1rem; font-weight: 700; color: var(--text-color); margin-bottom: 0.25rem; }
.cert-issuer { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 1.25rem; }
.cert-view-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: none;
    border: 1.5px solid var(--accent-indigo);
    color: var(--accent-indigo);
    padding: 0.5rem 1.25rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}
.cert-view-btn:hover {
    background: var(--accent-indigo);
    color: white;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.4);
    transform: translateX(2px);
}
.cert-view-btn i { font-size: 0.85rem; transition: transform 0.3s ease; }
.cert-view-btn:hover i { transform: translateX(3px); }
.cert-modal-img { width: 100%; border-radius: 1rem; border: 1px solid var(--border-color); }

/* ── Certificate Carousel ── */
.cert-carousel-wrap {
    position: relative;
    overflow: hidden;
    border-radius: 1.5rem;
    max-width: 520px;
    margin: 0 auto;
}
.cert-carousel-track {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.cert-carousel-slide {
    flex: 0 0 100%;
}
.cert-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(15, 23, 42, 0.75);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    width: 38px; height: 38px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    font-size: 1.1rem;
    z-index: 10;
    transition: background 0.2s, border-color 0.2s;
}
.cert-arrow:hover { background: var(--accent-indigo); border-color: var(--accent-indigo); }
.cert-arrow-left  { left: 10px; }
.cert-arrow-right { right: 10px; }
.cert-dots { display: flex; justify-content: center; gap: 8px; margin-top: 1.25rem; }
.cert-dot {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
}
.cert-dot.active { background: var(--accent-indigo); transform: scale(1.35); }
.cert-progress-bar {
    height: 3px;
    background: var(--border-color);
    border-radius: 3px;
    margin-top: 10px;
    overflow: hidden;
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
}
.cert-progress-fill {
    height: 100%;
    background: linear-gradient(to right, var(--accent-indigo), var(--accent-lime));
    border-radius: 3px;
    width: 0%;
    transition: width 0.1s linear;
}

/* ── Contact Form ── */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
    max-width: 900px;
    margin: 0 auto;
    text-align: left;
}
@media (max-width: 768px) {
    .contact-wrapper { grid-template-columns: 1fr; gap: 2rem; }
}
.contact-info-panel { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-info-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--secondary-bg);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    transition: border-color 0.3s, transform 0.3s;
}
.contact-info-item:hover { border-color: var(--accent-lime); transform: translateX(4px); }
.contact-info-icon {
    width: 42px; height: 42px;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(79,70,229,0.25), rgba(163,230,53,0.15));
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.contact-info-icon i { color: var(--accent-lime); font-size: 1rem; }
.contact-info-label { font-size: 0.75rem; color: var(--text-secondary); font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em; }
.contact-info-value { font-size: 0.95rem; color: var(--text-color); font-weight: 600; }

.field-group { position: relative; margin-bottom: 1.25rem; }
.field-group .field-icon {
    position: absolute;
    left: 1rem; top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 0.9rem;
    pointer-events: none;
    transition: color 0.3s;
}
.field-group.textarea-group .field-icon { top: 1.1rem; transform: none; }
.field-group input, .field-group textarea {
    width: 100%;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 0.85rem 1rem 0.85rem 2.75rem;
    border-radius: 0.875rem;
    font-size: 0.95rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    font-family: 'Inter', sans-serif;
}
.field-group input:focus, .field-group textarea:focus {
    outline: none;
    border-color: var(--accent-lime);
    box-shadow: 0 0 0 3px rgba(163, 230, 53, 0.15);
}
.field-icon { z-index: 1; }
::placeholder { color: #64748B; }

/* ── Typewriter ── */
.typewriter-cursor {
    display: inline-block;
    width: 2px; height: 1.2em;
    background-color: var(--accent-lime);
    margin-left: 0.2rem;
    animation: blink-caret 0.75s step-end infinite;
}
@keyframes blink-caret {
    from, to { background-color: transparent }
    50% { background-color: var(--accent-lime); }
}

.contact-textarea { resize: vertical; }

.contact-form-panel {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 1.5rem;
    padding: 2rem;
}

.textarea-icon {
    position: absolute;
    left: 1rem;
    top: 1rem;
    color: var(--text-secondary);
    pointer-events: none;
    font-size: 0.9rem;
}