:root {
    --bg-main: #0B0E14;
    --bg-card: #151A22;
    --bg-card-hover: #1A202A;

    --text-primary: #E2E8F0;
    --text-secondary: #94A3B8;

    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(56, 189, 248, 0.4);

    --accent-blue: #38BDF8;
    --accent-blue-hover: #7DD3FC;
    --accent-purple: #818CF8;

    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.4);

    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: 0.25s ease-in-out;
}

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

html {
    scroll-behavior: smooth;
}

/* ── AMBIENT GLOW ── */
.ambient-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(140px);
    z-index: 0;
    opacity: 0.12;
    pointer-events: none;
    animation: drift 18s infinite alternate ease-in-out;
}

.glow-blue {
    top: -15%;
    left: -10%;
    background-color: var(--accent-blue);
}

.glow-purple {
    bottom: -15%;
    right: -10%;
    background-color: var(--accent-purple);
    animation-delay: -6s;
}

@keyframes drift {
    0%   { transform: translate(0, 0) scale(1); }
    100% { transform: translate(60px, 60px) scale(1.12); }
}

/* ── BASE ── */
body {
    font-family: var(--font-body);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: color var(--transition);
}

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

.container {
    max-width: 1150px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
    z-index: 10;
}

/* ── NAVBAR ── */
.navbar {
    position: sticky;
    top: 0;
    width: 100%;
    background-color: rgba(11, 14, 20, 0.88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
}

.nav-container {
    max-width: 1150px;
    margin: 0 auto;
    padding: 0.85rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.logo-name {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: 0.3px;
    color: var(--text-primary);
    white-space: nowrap;
}

.nav-links {
    display: flex;
    gap: 2px;
}

.nav-link {
    padding: 6px 12px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 8px;
    transition: all var(--transition);
    white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.07);
}

.lang-selector {
    display: flex;
    gap: 4px;
    background-color: rgba(255, 255, 255, 0.07);
    padding: 4px;
    border-radius: 8px;
    flex-shrink: 0;
}

.lang-btn {
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.6);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.78rem;
    padding: 4px 10px;
    border-radius: 5px;
    cursor: pointer;
    transition: all var(--transition);
}

.lang-btn:hover { color: #fff; }

.lang-btn.active {
    background-color: rgba(255, 255, 255, 0.18);
    color: #fff;
}

/* ── HERO ── */
.hero-wrapper {
    padding: 5rem 2rem 6rem;
    margin-bottom: -4rem;
}

.hero {
    max-width: 920px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4rem;
}

.hero-content { flex: 1; }

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 14px;
    font-size: 0.83rem;
    font-weight: 500;
    color: #fff;
    background-color: rgba(56, 189, 248, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.35);
    border-radius: 20px;
    margin-bottom: 1.5rem;
}

.status-dot {
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background-color: #4ade80;
    animation: pulse-dot 2.5s infinite;
    flex-shrink: 0;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.4); }
    50%       { opacity: 0.7; box-shadow: 0 0 0 5px rgba(74, 222, 128, 0); }
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 3.6rem;
    font-weight: 800;
    line-height: 1.08;
    margin-bottom: 0.75rem;
    letter-spacing: -1.5px;
}

.highlight { color: var(--accent-blue); }

.hero-role {
    font-size: 1.1rem;
    color: var(--accent-blue);
    font-weight: 500;
    margin-bottom: 0.85rem;
    letter-spacing: 0.3px;
    opacity: 0.9;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.72);
    margin-bottom: 2rem;
    max-width: 540px;
    line-height: 1.65;
}

.social-links {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.social-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 16px;
    background-color: rgba(255, 255, 255, 0.07);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 30px;
    font-size: 0.88rem;
    font-weight: 500;
    transition: all var(--transition);
}

.social-btn:hover {
    background-color: var(--accent-blue);
    border-color: var(--accent-blue);
    color: #0B0E14;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(56, 189, 248, 0.25);
}

/* Profile image with gradient ring */
.hero-image { flex-shrink: 0; }

.profile-img-wrapper {
    position: relative;
    width: 230px;
    height: 230px;
    border-radius: 50%;
}

.profile-img-wrapper img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    display: block;
    background-color: var(--bg-card);
}

/* ── SECTIONS ── */
.section { margin-bottom: 4.5rem; }

.section-title {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1.75rem;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-primary);
}

.section-title i {
    color: var(--text-secondary);
    font-size: 1.35rem;
    flex-shrink: 0;
}

/* ── ABOUT ── */
.about-card {
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}

.about-card p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.75;
}

.about-card strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* ── CARD BASE ── */
.card {
    background-color: transparent;
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    position: relative;
    border: 1px solid var(--border-color);
    transition: border-color var(--transition), background-color var(--transition);
}

/* ── TIMELINE ── */
.timeline {
    position: relative;
    padding-left: 24px;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-blue), transparent);
}

.timeline-item {
    position: relative;
    margin-bottom: 1.75rem;
}

.timeline-item:last-child { margin-bottom: 0; }

.timeline-dot {
    position: absolute;
    left: -28px;
    top: 26px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.2);
}

.timeline-card {
    border-left: 3px solid var(--accent-blue);
    background: linear-gradient(90deg, rgba(56, 189, 248, 0.04) 0%, transparent 100%);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.timeline-card:hover {
    border-left-color: var(--accent-blue-hover);
    box-shadow: 0 4px 24px rgba(56, 189, 248, 0.08);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.card-title {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 3px;
}

.card-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    line-height: 1.5;
}

.badge {
    font-size: 0.72rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
    background-color: rgba(56, 189, 248, 0.1);
    color: var(--accent-blue);
    white-space: nowrap;
    flex-shrink: 0;
}

.badge-outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.card-list {
    list-style: none;
    color: var(--text-secondary);
    font-size: 0.92rem;
}

.card-list li {
    margin-bottom: 0.4rem;
    position: relative;
    padding-left: 16px;
    line-height: 1.55;
}

.card-list li::before {
    content: '–';
    position: absolute;
    left: 0;
    color: var(--accent-blue);
    opacity: 0.5;
}

/* ── GRIDS ── */
.grid-2-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.grid-3-col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

/* ── EDUCATION CARD ── */
.edu-card {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    background: rgba(255, 255, 255, 0.02);
}

/* ── SKILLS ── */
.skills-card {
    display: flex;
    flex-direction: column;
    background-color: rgba(255, 255, 255, 0.02);
}

.skills-card.border-blue {
    border-left: 3px solid var(--accent-blue);
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.05) 0%, transparent 100%);
}

.skills-card.border-orange {
    border-left: 3px solid #f97316;
    background: linear-gradient(135deg, rgba(249, 115, 22, 0.05) 0%, transparent 100%);
}

.skills-card.border-purple {
    border-left: 3px solid var(--accent-purple);
    background: linear-gradient(135deg, rgba(129, 140, 248, 0.05) 0%, transparent 100%);
}

.center-title {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

.skills-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 20px;
    font-size: 0.82rem;
    color: var(--text-primary);
    transition: all var(--transition);
    cursor: default;
}

.skill-tag:hover {
    background: rgba(56, 189, 248, 0.1);
    border-color: rgba(56, 189, 248, 0.3);
    color: var(--accent-blue);
}

.skill-tag i {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ── LANGUAGES ── */
.lang-card {
    padding: 1.25rem 1.5rem;
    background: rgba(255, 255, 255, 0.02);
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.lang-flag-icon {
    width: 38px;
    height: 38px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.73rem;
    font-weight: 800;
    flex-shrink: 0;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.lang-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.lang-level-text {
    font-size: 0.82rem;
    color: var(--text-secondary);
}

/* ── CERTIFICATIONS ── */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.85rem;
}

.cert-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition);
    cursor: default;
}

.cert-card:hover {
    background: rgba(255, 255, 255, 0.045);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.cert-icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    flex-shrink: 0;
}

.cert-icon-ms       { background: rgba(0, 120, 212, 0.15); color: #47a8f5; }
.cert-icon-google   { background: rgba(66, 133, 244, 0.15); color: #79aaf7; }
.cert-icon-ai       { background: rgba(16, 163, 127, 0.15); color: #34d399; }
.cert-icon-sec      { background: rgba(239, 68, 68, 0.15);  color: #f87171; }
.cert-icon-hack     { background: rgba(129, 140, 248, 0.15); color: var(--accent-purple); }
.cert-icon-py       { background: rgba(53, 114, 165, 0.15); color: #70a8d8; }
.cert-icon-santander { background: rgba(236, 0, 0, 0.12); color: #f06060; }

.cert-name {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
}

.cert-issuer {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* ── FOOTER ── */
.footer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.88rem;
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
    margin-top: 3rem;
}

/* ── SCROLL ANIMATIONS ── */
.slide-up {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s cubic-bezier(0.2, 0.8, 0.2, 1),
                transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
    transition-delay: var(--delay, 0s);
}

.slide-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── RESPONSIVE ── */
@media (max-width: 960px) {
    .nav-links { display: none; }

    .grid-3-col { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .hero {
        flex-direction: column-reverse;
        text-align: center;
        gap: 2.5rem;
    }

    .hero-title { font-size: 2.8rem; }

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

    .grid-2-col { grid-template-columns: 1fr; }

    .grid-3-col { grid-template-columns: 1fr; }

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

    .card-header { flex-direction: column; gap: 8px; }

    .profile-img-wrapper { width: 180px; height: 180px; }

    .hero-wrapper { padding: 3.5rem 1rem 4rem; }
}

@media (max-width: 480px) {
    .container { padding: 1.25rem; }

    .nav-container { padding: 0.75rem 1.25rem; }

    .hero-title { font-size: 2.2rem; }
}