/* ============================================
   DESIGN SYSTEM
   ============================================ */
:root {
    --bg-primary: #0f1117;
    --bg-secondary: #161822;
    --bg-card: #1c1f2e;
    --bg-card-hover: #232740;
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --text-primary: #f0f0f5;
    --text-secondary: #9498b3;
    --text-muted: #5c6082;
    --accent: #38bdf8;
    --accent-glow: rgba(56, 189, 248, 0.15);
    --accent-2: #818cf8;
    --green: #34d399;
    --green-glow: rgba(52, 211, 153, 0.2);
    --yellow: #fbbf24;
    --red: #f87171;
    --radius: 14px;
    --radius-sm: 10px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: var(--accent);
    color: var(--bg-primary);
}

a {
    text-decoration: none;
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
    background: rgba(15, 17, 23, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 1rem 0;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    padding: 0.6rem 0;
    border-bottom-color: var(--border);
    background: rgba(15, 17, 23, 0.95);
}

.navbar-brand {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-primary) !important;
}

.brand-dot {
    color: var(--accent);
}

.nav-link {
    color: var(--text-secondary) !important;
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary) !important;
    background: rgba(255, 255, 255, 0.05);
}

/* Language Toggle */
.lang-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.35rem 0.7rem;
    margin-left: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

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

.lang-option {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    transition: var(--transition);
    padding: 2px 4px;
    border-radius: 4px;
}

.lang-option.active {
    color: var(--accent);
    background: var(--accent-glow);
}

.lang-divider {
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* ============================================
   HERO
   ============================================ */
.hero {
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 50% 0%, rgba(56, 189, 248, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 50%, rgba(129, 140, 248, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse 60% 50% at 20% 80%, rgba(52, 211, 153, 0.04) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-greeting {
    font-size: 1rem;
    font-weight: 500;
    color: var(--accent);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.hero-name {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1.5px;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 50%, var(--accent-2) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-role-wrapper {
    margin-bottom: 2rem;
}

.hero-role {
    font-size: 1.3rem;
    font-weight: 400;
    color: var(--text-secondary);
    position: relative;
}

.tech-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-bottom: 2.5rem;
}

.badge-tech {
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.45rem 1rem;
    border-radius: 100px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    transition: var(--transition);
}

.badge-tech:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-glow);
    transform: translateY(-2px);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-hero-primary {
    display: inline-flex;
    align-items: center;
    padding: 0.85rem 2rem;
    background: var(--accent);
    color: var(--bg-primary);
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: 10px;
    transition: var(--transition);
}

.btn-hero-primary:hover {
    background: #7dd3fc;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(56, 189, 248, 0.3);
}

.btn-hero-outline {
    display: inline-flex;
    align-items: center;
    padding: 0.85rem 2rem;
    background: transparent;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: 10px;
    border: 1px solid var(--border-hover);
    transition: var(--transition);
}

.btn-hero-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

/* ============================================
   SECTIONS
   ============================================ */
.section-padding {
    padding: 6rem 0;
}

.section-dark {
    background: var(--bg-secondary);
}

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -1px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
}

.text-center .section-title::after {
    left: 50%;
    transform: translateX(-50%);
}

/* ============================================
   ABOUT
   ============================================ */
.about-avatar {
    display: flex;
    justify-content: center;
}

.avatar-ring {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    padding: 3px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    animation: ring-rotate 6s linear infinite;
}

@keyframes ring-rotate {
    0% { filter: hue-rotate(0deg); }
    100% { filter: hue-rotate(360deg); }
}

.avatar-inner {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.avatar-inner i {
    font-size: 3.5rem;
    color: var(--accent);
}

.about-location {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.about-location i {
    color: var(--accent);
    margin-right: 4px;
}

.about-socials {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.about-socials a {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 1rem;
    transition: var(--transition);
}

.about-socials a:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-glow);
    transform: translateY(-2px);
}

.about-description {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 1rem;
}

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

.text-accent {
    color: var(--accent);
    font-weight: 500;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
    margin-top: 2rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem 1rem;
    text-align: center;
    transition: var(--transition);
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1.4;
}

/* ============================================
   TIMELINE
   ============================================ */
.timeline {
    position: relative;
    padding-left: 50px;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 14px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent), var(--accent-2), transparent);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
}

.timeline-dot {
    position: absolute;
    left: -43px;
    top: 22px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 2px solid var(--text-muted);
    z-index: 1;
    transition: var(--transition);
}

.timeline-dot.active {
    border-color: var(--accent);
    background: var(--accent);
    box-shadow: 0 0 12px rgba(56, 189, 248, 0.5);
}

.timeline-item:hover .timeline-dot {
    border-color: var(--accent);
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: var(--transition);
}

.timeline-content:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 0.3rem;
}

.timeline-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.2rem;
}

.timeline-company {
    font-size: 0.9rem;
    color: var(--accent);
    font-weight: 500;
}

.timeline-badge-current {
    background: var(--green-glow);
    color: var(--green);
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
    flex-shrink: 0;
}

.timeline-date {
    display: inline-block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.8rem;
}

.timeline-list {
    list-style: none;
    padding: 0;
}

.timeline-list li {
    position: relative;
    padding-left: 1.1rem;
    margin-bottom: 0.4rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.timeline-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 9px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--text-muted);
}

/* ============================================
   SKILLS
   ============================================ */
.skills-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    height: 100%;
    transition: var(--transition);
}

.skills-card:hover {
    border-color: var(--border-hover);
}

.skills-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.skills-card-title i {
    color: var(--accent);
    margin-right: 8px;
}

.skills-list {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.skill-pill {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 0.7rem 1rem;
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--accent);
    transition: var(--transition);
}

.skill-pill:hover {
    background: var(--accent-glow);
    color: var(--text-primary);
    transform: translateX(4px);
}

.other-skills-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.other-skills-title i {
    color: var(--accent);
    margin-right: 6px;
}

.other-skills-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.other-skill {
    font-size: 0.85rem;
    font-weight: 500;
    padding: 0.5rem 1.2rem;
    border-radius: 100px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    transition: var(--transition);
}

.other-skill:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-glow);
    transform: translateY(-2px);
}

/* ============================================
   EDUCATION
   ============================================ */
.edu-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.edu-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.02);
    transition: var(--transition);
}

.edu-item:hover {
    background: rgba(255, 255, 255, 0.04);
}

.edu-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--accent-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 1rem;
    flex-shrink: 0;
}

.edu-info h6 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.2rem;
}

.edu-institution {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: block;
    margin-bottom: 0.3rem;
}

.edu-status {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.status-progress {
    background: rgba(251, 191, 36, 0.15);
    color: var(--yellow);
}

.status-done {
    background: var(--green-glow);
    color: var(--green);
}

/* ============================================
   CERTIFICATIONS
   ============================================ */
.cert-list {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.cert-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.9rem 1rem;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.02);
    transition: var(--transition);
}

.cert-item:hover {
    background: rgba(255, 255, 255, 0.04);
}

.cert-icon-wrapper {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(251, 191, 36, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--yellow);
    font-size: 1rem;
    flex-shrink: 0;
}

.cert-info h6 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.1rem;
}

.cert-info span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ============================================
   CONTACT
   ============================================ */
.contact-card-link {
    display: block;
    color: inherit;
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    text-align: center;
    transition: var(--transition);
    height: 100%;
}

.contact-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    background: var(--bg-card-hover);
}

.contact-card-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin: 0 auto 1rem;
    transition: var(--transition);
}

.contact-card-icon.whatsapp {
    background: rgba(37, 211, 102, 0.1);
    color: #25d366;
}

.contact-card-icon.linkedin {
    background: rgba(10, 102, 194, 0.15);
    color: #0a66c2;
}

.contact-card-icon.github {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
}

.contact-card-icon.location {
    background: rgba(248, 113, 113, 0.1);
    color: var(--red);
}

.contact-card:hover .contact-card-icon {
    transform: scale(1.1);
}

.contact-card h6 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.contact-card p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin: 0;
}

.contact-card-link:hover .contact-card h6 {
    color: var(--accent);
}

/* ============================================
   FOOTER
   ============================================ */
footer {
    border-top: 1px solid var(--border);
    padding: 2rem 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-content p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin: 0;
}

.footer-links {
    display: flex;
    gap: 1rem;
}

.footer-links a {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 1rem;
    transition: var(--transition);
}

.footer-links a:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-glow);
    transform: translateY(-2px);
}

/* ============================================
   BACK TO TOP
   ============================================ */
#back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-secondary);
    font-size: 1rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
    cursor: pointer;
}

#back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

#back-to-top:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-glow);
    transform: translateY(-3px);
}

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

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

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 991.98px) {
    .hero-name {
        font-size: 2.5rem;
    }

    .section-padding {
        padding: 4rem 0;
    }
}

@media (max-width: 767.98px) {
    .hero-name {
        font-size: 2rem;
    }

    .hero-role {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 1.7rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .stats-grid {
        gap: 0.8rem;
    }

    .timeline {
        padding-left: 40px;
    }

    .timeline-dot {
        left: -34px;
    }

    .timeline-header {
        flex-direction: column;
        gap: 0.5rem;
    }

    .badge-tech {
        font-size: 0.75rem;
        padding: 0.4rem 0.8rem;
    }

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

@media (max-width: 575.98px) {
    .hero-name {
        font-size: 1.7rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn-hero-primary,
    .btn-hero-outline {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
}