:root {
    --bg-color: #f4f8ff;
    --bg-soft: #eaf2ff;
    --text-color: #10233f;
    --muted-color: #64748b;
    --card-bg: #ffffff;
    --accent-color: #2563eb;
    --accent-soft: #dbeafe;
    --hover-color: #1d4ed8;
    --link-color: #2563eb;
    --border: #dbe7ff;
    --shadow: rgba(37, 99, 235, 0.12);
    --shadow-strong: rgba(15, 23, 42, 0.16);
}

[data-theme="dark"] {
    --bg-color: #0f172a;
    --bg-soft: #111c33;
    --text-color: #f8fafc;
    --muted-color: #cbd5e1;
    --card-bg: #172033;
    --accent-color: #60a5fa;
    --accent-soft: rgba(96, 165, 250, 0.14);
    --hover-color: #93c5fd;
    --link-color: #93c5fd;
    --border: #28364f;
    --shadow: rgba(0, 0, 0, 0.28);
    --shadow-strong: rgba(0, 0, 0, 0.45);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background:
        radial-gradient(circle at top left, rgba(37, 99, 235, 0.12), transparent 30%),
        linear-gradient(135deg, var(--bg-color) 0%, var(--bg-soft) 100%);
    color: var(--text-color);
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
    transition: background 0.3s ease, color 0.3s ease;
}

a {
    color: inherit;
}

.container {
    width: min(1140px, calc(100% - 40px));
    margin: 0 auto;
}

/* ================= NAVBAR ================= */

.navbar {
    width: 100%;
    position: fixed;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(18px);
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
    border-bottom: 1px solid rgba(219, 231, 255, 0.8);
    transition: background 0.3s ease, border 0.3s ease;
}

[data-theme="dark"] .navbar {
    background: rgba(15, 23, 42, 0.86);
    border-bottom: 1px solid rgba(40, 54, 79, 0.8);
}

.nav-container {
    min-height: 76px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.55rem;
    font-weight: 800;
    text-decoration: none;
    color: var(--text-color);
    letter-spacing: -0.04em;
}

.logo span {
    color: var(--accent-color);
}

.nav-links {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 22px;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    transition: color 0.25s ease, transform 0.25s ease;
}

.nav-links a:hover {
    color: var(--accent-color);
    transform: translateY(-2px);
}

.theme-toggle-li {
    display: flex;
    align-items: center;
}

.theme-toggle {
    display: flex;
    align-items: center;
}

#theme-switch {
    display: none;
}

.toggle-label {
    width: 52px;
    height: 28px;
    background: var(--accent-soft);
    border: 1px solid var(--border);
    border-radius: 999px;
    position: relative;
    cursor: pointer;
    display: inline-block;
}

.toggle-slider {
    width: 22px;
    height: 22px;
    background: var(--card-bg);
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 3px;
    box-shadow: 0 4px 12px var(--shadow);
    transition: transform 0.3s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.72rem;
}

.toggle-slider::before {
    content: "☀️";
}

#theme-switch:checked + .toggle-label .toggle-slider {
    transform: translateX(23px);
}

#theme-switch:checked + .toggle-label .toggle-slider::before {
    content: "🌙";
}

.menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--card-bg);
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
}

/* ================= HERO ================= */

.hero {
    min-height: 100vh;
    padding: 140px 0 90px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 18% 20%, rgba(37, 99, 235, 0.22), transparent 32%),
        radial-gradient(circle at 80% 15%, rgba(14, 165, 233, 0.18), transparent 28%),
        radial-gradient(circle at 50% 90%, rgba(99, 102, 241, 0.16), transparent 28%);
    z-index: -2;
}

.particles {
    position: absolute;
    inset: 0;
    z-index: -1;
    opacity: 0.35;
}

.hero-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
    align-items: center;
    gap: 56px;
}

.eyebrow,
.section-kicker {
    color: var(--accent-color);
    font-size: 0.84rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    margin-bottom: 14px;
}

.hero h1 {
    font-size: clamp(2.7rem, 6vw, 5.2rem);
    line-height: 1.05;
    letter-spacing: -0.07em;
    margin-bottom: 20px;
}

.hero h1 span {
    color: var(--accent-color);
}

.hero-quote {
    max-width: 640px;
    color: var(--muted-color);
    font-size: 1.15rem;
    margin-bottom: 16px;
}

.hero h2 {
    font-size: clamp(1.25rem, 3vw, 1.85rem);
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 32px;
}

#typed,
#typed-cursor {
    color: var(--accent-color);
}

#typed-cursor {
    animation: blink 0.7s infinite;
}

@keyframes blink {
    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

.hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 28px;
}

.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 9px;
    padding: 13px 24px;
    background: var(--accent-color);
    color: #ffffff;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: 999px;
    font-size: 0.96rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 14px 30px rgba(37, 99, 235, 0.25);
    transition: transform 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.btn:hover {
    background: var(--hover-color);
    transform: translateY(-3px);
    box-shadow: 0 20px 36px rgba(37, 99, 235, 0.32);
}

.btn-outline {
    background: transparent;
    color: var(--text-color);
    border-color: var(--border);
    box-shadow: none;
}

.btn-outline:hover {
    background: var(--card-bg);
    color: var(--accent-color);
    box-shadow: 0 14px 28px var(--shadow);
}

.hero-social {
    display: flex;
    gap: 14px;
}

.hero-social a,
.social-links a {
    width: 42px;
    height: 42px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 14px;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    color: var(--text-color);
    font-size: 1.25rem;
    text-decoration: none;
    box-shadow: 0 10px 24px var(--shadow);
    transition: transform 0.25s ease, color 0.25s ease, border 0.25s ease;
}

.hero-social a:hover,
.social-links a:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
    transform: translateY(-4px);
}

.hero-card {
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(219, 231, 255, 0.9);
    border-radius: 34px;
    padding: 28px;
    box-shadow: 0 30px 70px var(--shadow-strong);
    backdrop-filter: blur(18px);
    position: relative;
}

[data-theme="dark"] .hero-card {
    background: rgba(23, 32, 51, 0.75);
    border-color: rgba(40, 54, 79, 0.95);
}

.hero-card::before {
    content: "";
    position: absolute;
    width: 140px;
    height: 140px;
    top: -30px;
    right: -30px;
    background: var(--accent-soft);
    border-radius: 50%;
    z-index: -1;
}

.profile-img {
    width: 100%;
    max-height: 390px;
    object-fit: cover;
    border-radius: 26px;
    border: 1px solid var(--border);
    display: block;
}

.hero-card-info {
    padding-top: 22px;
    text-align: center;
}

.hero-card-info h3 {
    font-size: 1.35rem;
    margin-bottom: 4px;
}

.hero-card-info p {
    color: var(--muted-color);
    margin-bottom: 18px;
}

.quick-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.quick-stats div {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 14px 8px;
}

.quick-stats strong {
    display: block;
    color: var(--accent-color);
    font-size: 1.25rem;
}

.quick-stats span {
    display: block;
    color: var(--muted-color);
    font-size: 0.78rem;
    font-weight: 600;
}

/* ================= SECTIONS ================= */

.section {
    padding: 100px 0;
    position: relative;
}

.soft-section {
    background: rgba(255, 255, 255, 0.34);
    border-top: 1px solid rgba(219, 231, 255, 0.55);
    border-bottom: 1px solid rgba(219, 231, 255, 0.55);
}

[data-theme="dark"] .soft-section {
    background: rgba(15, 23, 42, 0.26);
    border-color: rgba(40, 54, 79, 0.7);
}

.section-header {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 42px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.15;
    letter-spacing: -0.05em;
    text-align: center;
    color: var(--text-color);
    margin-bottom: 18px;
}

.section-title.left {
    text-align: left;
}

.section-subtitle {
    color: var(--muted-color);
    max-width: 680px;
    margin: 0 auto;
}

.left-text {
    margin-left: 0;
}

.two-column {
    display: grid;
    grid-template-columns: 0.9fr 1.25fr;
    gap: 56px;
    align-items: start;
}

.section-text {
    color: var(--text-color);
    font-size: 1.02rem;
}

.about-box {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 28px;
    padding: 30px;
    box-shadow: 0 20px 50px var(--shadow);
}

.personal-info-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    margin-top: 24px;
}

.personal-info-grid p {
    background: var(--bg-color);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 12px 14px;
    color: var(--text-color);
    word-break: break-word;
}

.personal-info-grid strong {
    display: inline-block;
    min-width: 94px;
    color: var(--text-color);
}

.personal-info-grid a {
    color: var(--link-color);
    text-decoration: none;
    font-weight: 600;
}

.personal-info-grid a:hover {
    text-decoration: underline;
}

/* ================= EDUCATION ================= */

.timeline-card {
    max-width: 820px;
    margin: 0 auto;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 26px;
    padding: 28px;
    display: flex;
    gap: 22px;
    align-items: flex-start;
    box-shadow: 0 20px 50px var(--shadow);
}

.timeline-icon {
    width: 58px;
    height: 58px;
    border-radius: 18px;
    background: var(--accent-soft);
    color: var(--accent-color);
    display: grid;
    place-items: center;
    font-size: 1.45rem;
    flex-shrink: 0;
}

.timeline-card h3 {
    font-size: 1.35rem;
    margin-bottom: 8px;
}

.timeline-card p {
    color: var(--muted-color);
}

/* ================= PROJECTS ================= */

.project-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 34px;
}

.project-tab {
    border: 1px solid var(--border);
    background: var(--card-bg);
    color: var(--text-color);
    border-radius: 999px;
    padding: 11px 18px;
    font-size: 0.95rem;
    font-weight: 800;
    cursor: pointer;
    box-shadow: 0 10px 24px var(--shadow);
    transition: transform 0.22s ease, background 0.22s ease, color 0.22s ease, border 0.22s ease;
}

.project-tab i {
    margin-right: 7px;
}

.project-tab:hover {
    transform: translateY(-3px);
    color: var(--accent-color);
    border-color: var(--accent-color);
}

.project-tab.active {
    background: var(--accent-color);
    color: #ffffff;
    border-color: var(--accent-color);
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px;
}

.project-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 28px;
    overflow: hidden;
    box-shadow: 0 18px 42px var(--shadow);
    transition: transform 0.28s ease, box-shadow 0.28s ease, opacity 0.28s ease;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 28px 60px var(--shadow-strong);
}

.project-card.hide {
    display: none;
}

.project-card a {
    color: inherit;
    text-decoration: none;
    display: block;
    height: 100%;
}

.project-media {
    height: 220px;
    position: relative;
    overflow: hidden;
    background: var(--accent-soft);
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.project-card:hover .project-img {
    transform: scale(1.06);
}

.project-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: rgba(15, 23, 42, 0.82);
    color: #ffffff;
    padding: 7px 12px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.04em;
}

.project-body {
    padding: 24px;
}

.project-body h3 {
    font-size: 1.35rem;
    line-height: 1.25;
    margin-bottom: 12px;
}

.project-body p {
    color: var(--muted-color);
    margin-bottom: 18px;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
}

.tech-stack span {
    background: var(--accent-soft);
    color: var(--accent-color);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 6px 10px;
    font-size: 0.78rem;
    font-weight: 800;
}

.project-gradient {
    display: grid;
    place-items: center;
    color: #ffffff;
    font-size: 4rem;
}

.gradient-da {
    background:
        radial-gradient(circle at top left, rgba(255, 255, 255, 0.36), transparent 26%),
        linear-gradient(135deg, #2563eb, #06b6d4);
}

.gradient-web {
    background:
        radial-gradient(circle at top left, rgba(255, 255, 255, 0.34), transparent 26%),
        linear-gradient(135deg, #7c3aed, #2563eb);
}

.gradient-ai {
    background:
        radial-gradient(circle at top left, rgba(255, 255, 255, 0.34), transparent 26%),
        linear-gradient(135deg, #0f172a, #2563eb);
}

/* ================= AWARDS ================= */

.award-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.award-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 22px;
    padding: 24px;
    text-decoration: none;
    color: var(--text-color);
    box-shadow: 0 18px 42px var(--shadow);
    display: flex;
    align-items: center;
    gap: 16px;
    transition: transform 0.25s ease, border 0.25s ease;
}

.award-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent-color);
}

.award-card i {
    width: 48px;
    height: 48px;
    background: var(--accent-soft);
    color: var(--accent-color);
    display: grid;
    place-items: center;
    border-radius: 16px;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.award-card span {
    font-weight: 800;
}

/* ================= SKILLS ================= */

.skills-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.skill-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 26px 22px;
    box-shadow: 0 18px 42px var(--shadow);
    transition: transform 0.25s ease, border 0.25s ease;
}

.skill-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent-color);
}

.skill-card i {
    width: 54px;
    height: 54px;
    border-radius: 18px;
    background: var(--accent-soft);
    color: var(--accent-color);
    display: grid;
    place-items: center;
    font-size: 1.45rem;
    margin-bottom: 18px;
}

.skill-card h3 {
    font-size: 1.12rem;
    margin-bottom: 9px;
}

.skill-card p {
    color: var(--muted-color);
    font-size: 0.95rem;
}

/* ================= CONTACT ================= */

.contact-section {
    padding-bottom: 110px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 50px;
    align-items: start;
}

form {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 28px;
    padding: 28px;
    box-shadow: 0 20px 50px var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

form input,
form textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 14px 16px;
    background: var(--bg-color);
    color: var(--text-color);
    font-family: inherit;
    font-size: 0.98rem;
    transition: border 0.22s ease, box-shadow 0.22s ease;
}

form input:focus,
form textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px var(--accent-soft);
}

form textarea {
    min-height: 140px;
    resize: vertical;
}

form button {
    align-self: flex-start;
}

/* ================= FOOTER ================= */

footer {
    background: #0f172a;
    color: #e2e8f0;
    padding: 34px 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    align-items: center;
}

footer p {
    color: #cbd5e1;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    background: rgba(255, 255, 255, 0.08);
    color: #e2e8f0;
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow: none;
}

/* ================= ANIMATION ================= */

.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.75s ease, transform 0.75s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

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

@media (max-width: 980px) {
    .hero-layout,
    .two-column,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .hero {
        padding-top: 120px;
    }

    .hero-card {
        max-width: 520px;
        margin: 0 auto;
    }

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

    .award-grid,
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .section-title.left {
        text-align: center;
    }

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

    .left-text {
        margin: 0 auto;
        text-align: center;
    }
}

@media (max-width: 760px) {
    .container {
        width: min(100% - 28px, 1140px);
    }

    .nav-container {
        min-height: 68px;
    }

    .menu-toggle {
        display: inline-grid;
        place-items: center;
    }

    .nav-links {
        position: absolute;
        top: 68px;
        left: 14px;
        right: 14px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: 22px;
        padding: 16px;
        box-shadow: 0 20px 50px var(--shadow-strong);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        padding: 10px 12px;
        border-radius: 12px;
    }

    .nav-links a:hover {
        background: var(--accent-soft);
        transform: none;
    }

    .theme-toggle-li {
        padding: 8px 12px;
    }

    .hero {
        min-height: auto;
        padding: 116px 0 70px;
    }

    .hero h1 {
        letter-spacing: -0.05em;
    }

    .hero-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .hero-social {
        justify-content: center;
    }

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

    .project-tabs {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 8px;
    }

    .project-tab {
        white-space: nowrap;
    }

    .quick-stats {
        grid-template-columns: 1fr;
    }

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

    .award-grid,
    .skills-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .section {
        padding: 78px 0;
    }
}