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

:root {
    --blue-50: #eff6ff;
    --blue-100: #dbeafe;
    --blue-200: #bfdbfe;
    --blue-300: #93c5fd;
    --blue-400: #60a5fa;
    --blue-500: #3b82f6;
    --blue-600: #2563eb;
    --blue-700: #1d4ed8;
    --blue-800: #1e40af;
    --blue-900: #1e3a5f;

    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    --bg-primary: #ffffff;
    --bg-secondary: #f0f4f8;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border: #e2e8f0;

    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);
    --shadow-blue: 0 4px 20px rgba(59,130,246,0.2);

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-primary);
    background: var(--bg-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.nav.scrolled {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--blue-600);
    text-decoration: none;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: var(--blue-50);
    border: 1px solid var(--blue-200);
    transition: var(--transition);
}

.nav-logo:hover {
    background: var(--blue-100);
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--blue-500);
    border-radius: 1px;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--blue-600);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    padding: 24px;
    flex-direction: column;
    gap: 16px;
    z-index: 99;
    border-bottom: 1px solid var(--border);
    transform: translateY(-10px);
    opacity: 0;
    transition: var(--transition);
}

.mobile-menu.open {
    display: flex;
    transform: translateY(0);
    opacity: 1;
}

.mobile-menu a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 500;
    padding: 8px 0;
}

/* ===== Hero ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 120px 0 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 50% 0%, rgba(59,130,246,0.08) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 20%, rgba(96,165,250,0.06) 0%, transparent 50%),
        radial-gradient(ellipse 50% 40% at 20% 80%, rgba(59,130,246,0.04) 0%, transparent 50%);
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-greeting {
    font-size: 1.1rem;
    color: var(--blue-500);
    font-weight: 500;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

.hero-name {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.1;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--blue-700) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title {
    font-size: clamp(1.2rem, 2.5vw, 1.5rem);
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 500px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--blue-600);
    color: white;
    box-shadow: var(--shadow-blue);
}

.btn-primary:hover {
    background: var(--blue-700);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(59,130,246,0.3);
}

.btn-outline {
    background: transparent;
    color: var(--blue-600);
    border: 1.5px solid var(--blue-200);
}

.btn-outline:hover {
    background: var(--blue-50);
    border-color: var(--blue-400);
    transform: translateY(-2px);
}

/* ===== Orbit Animation ===== */
.orbit-container {
    position: relative;
    width: 380px;
    height: 380px;
    margin: 48px auto 40px;
}

.orbit-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
}

.orbit-mascot {
    width: 140px;
    height: auto;
    filter: drop-shadow(0 8px 24px rgba(59,130,246,0.15));
    animation: mascotFloat 3s ease-in-out infinite;
}

@keyframes mascotFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.orbit-ring {
    position: absolute;
    inset: 0;
    animation: orbitSpin 30s linear infinite;
}

.orbit-item {
    position: absolute;
    width: 72px;
    height: 72px;
    margin-left: -36px;
    margin-top: -36px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    border: 1px solid var(--border);
    transition: box-shadow 0.3s ease;
}

.orbit-item:hover {
    box-shadow: 0 6px 24px rgba(59,130,246,0.2);
    z-index: 10;
}

.orbit-item img {
    width: 44px;
    height: 44px;
    object-fit: contain;
    animation: orbitCounterSpin 30s linear infinite;
}

.orbit-fba {
    font-size: 0.75rem;
    font-weight: 800;
    color: #ff9900;
    letter-spacing: 1px;
    animation: orbitCounterSpin 30s linear infinite;
    display: block;
}

/* Position 6 items evenly around a circle (radius = 50%) */
.orbit-item:nth-child(1) { top: 0%;    left: 50%;  }
.orbit-item:nth-child(2) { top: 25%;   left: 93.3%; }
.orbit-item:nth-child(3) { top: 75%;   left: 93.3%; }
.orbit-item:nth-child(4) { top: 100%;  left: 50%;  }
.orbit-item:nth-child(5) { top: 75%;   left: 6.7%; }
.orbit-item:nth-child(6) { top: 25%;   left: 6.7%; }

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

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

@media (max-width: 768px) {
    .orbit-container {
        width: 280px;
        height: 280px;
        margin: 36px auto 32px;
    }
    .orbit-mascot { width: 110px; }
    .orbit-item { width: 56px; height: 56px; margin-left: -28px; margin-top: -28px; }
    .orbit-item img { width: 34px; height: 34px; }
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-indicator {
    width: 24px;
    height: 40px;
    border: 2px solid var(--blue-300);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator::after {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--blue-400);
    border-radius: 2px;
    animation: scrollDown 1.8s ease-in-out infinite;
}

@keyframes scrollDown {
    0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
    50% { opacity: 0.3; transform: translateX(-50%) translateY(12px); }
}

/* ===== Sections ===== */
.section {
    padding: 100px 0;
}

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

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 56px;
    color: var(--text-primary);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 48px;
    height: 3px;
    background: linear-gradient(90deg, var(--blue-400), var(--blue-600));
    border-radius: 2px;
    margin: 16px auto 0;
}

/* ===== About ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 1.02rem;
}

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

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.stat-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--blue-200);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--blue-600);
    display: inline;
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--blue-600);
}

.stat-label {
    display: block;
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 4px;
    font-weight: 500;
}

/* ===== Projects ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.project-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--blue-400), var(--blue-600));
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover {
    border-color: var(--blue-200);
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
}

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

.project-icon {
    width: 48px;
    height: 48px;
    background: var(--blue-50);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--blue-500);
    transition: var(--transition);
}

.project-card:hover .project-icon {
    background: var(--blue-100);
    color: var(--blue-600);
    transform: scale(1.1);
}

.project-icon svg {
    width: 24px;
    height: 24px;
}

.project-icon-logo {
    background: transparent;
    width: auto;
    height: auto;
}

.project-icon-logo img {
    height: 48px;
    width: auto;
    object-fit: contain;
}

.project-card:hover .project-icon-logo {
    background: transparent;
    transform: none;
}

.project-name {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.project-badge {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--blue-600);
    background: var(--blue-50);
    border: 1px solid var(--blue-100);
    padding: 4px 12px;
    border-radius: 50px;
    margin-bottom: 16px;
}

.project-desc {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.project-tech span {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--gray-500);
    background: var(--gray-100);
    padding: 4px 12px;
    border-radius: 50px;
}

.project-logos {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.project-logos img {
    height: 28px;
    width: auto;
    object-fit: contain;
    opacity: 0.7;
    transition: var(--transition);
    filter: grayscale(30%);
}

.project-logos img:hover {
    opacity: 1;
    filter: grayscale(0%);
    transform: scale(1.15);
}

.project-icons-row {
    display: flex;
    gap: 16px;
    align-items: center;
    margin-bottom: 16px;
}

.project-icons-row svg {
    opacity: 0.6;
    transition: var(--transition);
}

.project-icons-row svg:hover {
    opacity: 1;
    transform: scale(1.2);
}

/* ===== Skills ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.skill-group {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
}

.skill-group:hover {
    border-color: var(--blue-200);
    box-shadow: var(--shadow-md);
}

.skill-group-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--blue-600);
    margin-bottom: 16px;
}

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

.skill-tag {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    padding: 6px 14px;
    border-radius: 50px;
    transition: var(--transition);
}

.skill-tag:hover {
    color: var(--blue-600);
    background: var(--blue-50);
    border-color: var(--blue-200);
}

/* ===== Contact ===== */
.contact-container {
    text-align: center;
    max-width: 600px;
}

.contact-text {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

.contact-links {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 28px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition);
}

.contact-card:hover {
    border-color: var(--blue-300);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
    color: var(--blue-600);
}

.contact-card svg {
    width: 20px;
    height: 20px;
    color: var(--blue-500);
    flex-shrink: 0;
}

.contact-whatsapp:hover {
    border-color: #25d366;
    color: #25d366;
}

.contact-whatsapp svg {
    color: #25d366;
}

/* ===== Site Logos ===== */
.contact-site {
    flex-direction: column;
    gap: 8px;
    padding: 20px 28px;
}

.contact-logo {
    height: 40px;
    width: auto;
    object-fit: contain;
    transition: var(--transition);
}

.contact-site:hover .contact-logo {
    transform: scale(1.08);
    animation: logoShine 0.6s ease;
}

.contact-site-label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--blue-600);
    letter-spacing: 0.3px;
}

@keyframes logoShine {
    0% { filter: brightness(1); }
    50% { filter: brightness(1.2); }
    100% { filter: brightness(1); }
}

/* ===== Footer ===== */
.footer {
    padding: 32px 0;
    border-top: 1px solid var(--border);
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.footer-logo {
    font-weight: 700;
    color: var(--blue-500);
    font-size: 0.9rem;
}

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

/* ===== Scroll Reveal Animations ===== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.15s; }
.reveal-delay-2 { transition-delay: 0.3s; }
.reveal-delay-3 { transition-delay: 0.45s; }
.reveal-delay-4 { transition-delay: 0.6s; }
.reveal-delay-5 { transition-delay: 0.75s; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-toggle { display: flex; }

    .hero { padding: 100px 0 60px; }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

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

    .section { padding: 72px 0; }

    .contact-links {
        flex-direction: column;
        align-items: center;
    }

    .contact-card {
        width: 100%;
        max-width: 320px;
        justify-content: center;
    }

    .hero-name {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .about-stats {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .stat-card { padding: 16px; }
    .stat-number { font-size: 1.5rem; }

    .project-card { padding: 24px; }
}