/* =============================================
   Activity 2 – Personal Portfolio
   style.css
   ============================================= */

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

:root {
    --navy:   #1a237e;
    --blue:   #1565c0;
    --accent: #7c3aed;
    --accent2: #9333ea;
    --light:  #ede9fe;
    --bg:     #f8f7ff;
    --white:  #ffffff;
    --text:   #1e2a45;
    --muted:  #6b7280;
    --border: #e2d9f3;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--white);
    color: var(--text);
}

/* ── NAV ── */
nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 999;
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(10px);
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 48px;
    height: 64px;
    box-shadow: 0 1px 12px rgba(124,58,237,0.08);
    transition: background 0.3s;
}
nav.scrolled { box-shadow: 0 2px 18px rgba(124,58,237,0.13); }

.nav-brand {
    font-size: 1.15rem; font-weight: 900; color: var(--navy); letter-spacing: 0.5px;
    text-decoration: none;
}
.nav-brand::after { content: '.'; color: var(--accent); }

.nav-links { display: flex; gap: 4px; }
.nav-links a {
    color: #374151; font-size: 0.84rem; font-weight: 600;
    text-decoration: none; padding: 6px 14px; border-radius: 20px;
    transition: color 0.2s, background 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--accent); background: var(--light); }

/* "Let's Talk" CTA button in nav */
.nav-cta {
    background: var(--accent); color: #fff !important;
    padding: 8px 20px !important; border-radius: 25px !important;
    font-weight: 700 !important; font-size: 0.83rem !important;
    transition: background 0.2s, transform 0.15s !important;
}
.nav-cta:hover { background: var(--accent2) !important; transform: translateY(-1px); color: #fff !important; }

.nav-back {
    color: var(--muted); font-size: 0.78rem;
    text-decoration: none; display: flex; align-items: center; gap: 5px;
    transition: color 0.2s;
}
.nav-back:hover { color: var(--accent); }

/* Hamburger */
.nav-hamburger {
    display: none; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-hamburger span {
    display: block; width: 22px; height: 2px;
    background: var(--navy); border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav drawer */
.nav-drawer {
    display: none; flex-direction: column; gap: 4px;
    position: fixed; top: 64px; left: 0; right: 0;
    background: rgba(255,255,255,0.98);
    padding: 16px 24px 20px;
    z-index: 998;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 6px 20px rgba(124,58,237,0.1);
}
.nav-drawer.open { display: flex; }
.nav-drawer a {
    color: #374151; font-size: 0.9rem; font-weight: 600;
    text-decoration: none; padding: 10px 14px; border-radius: 9px;
    transition: background 0.2s, color 0.2s;
}
.nav-drawer a:hover { background: var(--light); color: var(--accent); }

/* ── HERO ── */
#hero {
    min-height: 100vh;
    background: var(--white);
    display: flex; align-items: center;
    padding: 80px 48px 40px;
}

.hero-inner {
    max-width: 1100px; margin: 0 auto; width: 100%;
    display: grid; grid-template-columns: 1fr 1fr;
    align-items: center; gap: 60px;
}

/* LEFT COLUMN */
.hero-left { display: flex; flex-direction: column; gap: 0; }

.hero-greeting {
    font-size: 2.4rem; font-weight: 700;
    color: var(--navy); margin-bottom: 2px;
    animation: fadeUp 0.5s ease both;
}

.hero-name {
    font-size: clamp(2.2rem, 4.5vw, 3.6rem);
    font-weight: 900;
    color: var(--accent);
    line-height: 1.1;
    margin-bottom: 22px;
    letter-spacing: -1px;
    min-height: 1.15em;
    animation: fadeUp 0.65s ease both;
    border-right: 3px solid var(--accent);
    white-space: nowrap;
    overflow: hidden;
    width: 0;
}
.hero-name.typed { border-right-color: transparent; white-space: normal; overflow: visible; width: auto; }

@keyframes typeCursor { 0%,100%{border-color:var(--accent)} 50%{border-color:transparent} }

.hero-bio {
    font-size: 0.9rem; line-height: 1.8;
    color: var(--muted); margin-bottom: 30px;
    max-width: 460px;
    animation: fadeUp 0.8s ease both;
}

.hero-btns {
    display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 36px;
    animation: fadeUp 0.95s ease both;
}

.btn-primary {
    background: var(--navy); color: #fff;
    font-size: 0.82rem; font-weight: 800; letter-spacing: 0.8px;
    padding: 13px 28px; border-radius: 8px;
    text-decoration: none;
    transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
    box-shadow: 0 4px 18px rgba(26,35,126,0.2);
}
.btn-primary:hover {
    background: #0d1460;
    transform: translateY(-2px);
    box-shadow: 0 8px 26px rgba(26,35,126,0.28);
}

.btn-outline {
    background: transparent; color: var(--accent);
    border: 2px solid var(--accent);
    font-size: 0.82rem; font-weight: 700; letter-spacing: 0.8px;
    padding: 11px 28px; border-radius: 8px;
    text-decoration: none; transition: all 0.2s;
}
.btn-outline:hover { background: var(--accent); color: #fff; }

/* Social Icons */
.hero-socials {
    display: flex; gap: 12px;
    animation: fadeUp 1.1s ease both;
}
.social-icon {
    width: 40px; height: 40px; border-radius: 50%;
    border: 1.5px solid var(--border);
    color: var(--navy);
    display: flex; align-items: center; justify-content: center;
    text-decoration: none;
    transition: border-color 0.2s, color 0.2s, background 0.2s, transform 0.15s;
}
.social-icon:hover {
    border-color: var(--accent); color: var(--accent);
    background: var(--light); transform: translateY(-2px);
}

/* RIGHT COLUMN — photo */
.hero-right {
    display: flex; justify-content: center; align-items: center;
    animation: fadeUp 0.7s ease both;
}

.hero-photo-wrap {
    position: relative;
    width: 320px; height: 380px;
}

.hero-photo-placeholder {
    width: 100%; height: 100%;
    border-radius: 10px;
    background: #e2d9f3;
    display: flex; align-items: flex-end; justify-content: center;
    overflow: hidden;
    position: relative; z-index: 1;
    border: 1px solid var(--border);
    transition: transform 0.3s;
}
.hero-photo-wrap:hover .hero-photo-placeholder { transform: translate(-5px, -5px); }

.hero-photo-placeholder span {
    display: block;
    width: 100%; height: 100%;
}

/* Offset frame — accent color, like activity 3 */
.hero-photo-wrap::before {
    content: '';
    display: block;
    position: absolute; inset: 0;
    border-radius: 10px;
    border: 2px solid var(--accent);
    transform: translate(12px, 12px);
    z-index: 0;
    transition: transform 0.3s;
}
.hero-photo-wrap:hover::before { transform: translate(16px, 16px); }

@keyframes fadeUp { from{opacity:0;transform:translateY(20px)} to{opacity:1;transform:translateY(0)} }

.scroll-hint {
    position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
    color: var(--muted); font-size: 0.7rem; letter-spacing: 1.5px;
    display: flex; flex-direction: column; align-items: center; gap: 6px;
    text-transform: uppercase;
}
.scroll-arrow { font-size: 1.1rem; animation: bounce 1.8s infinite; }

/* ── SECTIONS SHARED ── */
section { padding: 80px 24px; }
.section-inner { max-width: 960px; margin: 0 auto; }

.section-label {
    font-size: 0.72rem; font-weight: 800; letter-spacing: 2px;
    text-transform: uppercase; color: var(--accent); margin-bottom: 8px;
}
.section-title {
    font-size: 1.9rem; font-weight: 900; color: var(--navy);
    margin-bottom: 14px; line-height: 1.2;
}
.section-divider {
    width: 48px; height: 4px; background: var(--accent);
    border-radius: 2px; margin-bottom: 36px;
}

/* Scroll reveal — hidden by default, JS adds .visible
   If JS never runs, the noscript fallback below shows everything */
.reveal {
    opacity: 0; transform: translateY(28px);
    transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* Fallback: if JS is disabled or crashes, show everything */
.no-js .reveal { opacity: 1; transform: none; }

/* ── ABOUT ── */
#about { background: var(--white); }
.about-grid {
    display: grid; grid-template-columns: 1fr;
    gap: 50px; align-items: start;
    max-width: 720px; margin: 0 auto;
}
.about-avatar-wrap { display: flex; justify-content: center; }
.about-avatar {
    width: 200px; height: 200px; border-radius: 50%;
    background: linear-gradient(135deg, var(--navy), var(--accent));
    display: flex; align-items: center; justify-content: center;
    font-size: 5rem; box-shadow: 0 8px 32px rgba(26,35,126,0.25);
    flex-shrink: 0;
    transition: transform 0.3s, box-shadow 0.3s;
}
.about-avatar:hover { transform: scale(1.05); box-shadow: 0 14px 40px rgba(26,35,126,0.35); }

.about-text p {
    font-size: 0.93rem; line-height: 1.8; color: #374151; margin-bottom: 14px;
}
.about-details {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 10px; margin-top: 22px;
}
.detail-item {
    display: flex; align-items: flex-start; gap: 8px;
    font-size: 0.82rem; color: #374151;
    background: var(--bg); padding: 10px 12px; border-radius: 10px;
}
.detail-icon  { font-size: 1rem; flex-shrink: 0; margin-top: 1px; }
.detail-label { font-weight: 700; color: var(--navy); display: block; margin-bottom: 2px; }

/* ── SKILLS ── */
#skills { background: var(--bg); }
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 14px;
}
.skill-chip {
    background: var(--white);
    border: 1.5px solid var(--border);
    border-radius: 12px;
    padding: 16px 14px;
    text-align: center;
    font-size: 0.83rem; font-weight: 700; color: var(--navy);
    display: flex; flex-direction: column; align-items: center; gap: 8px;
    box-shadow: 0 2px 8px rgba(26,35,126,0.06);
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s, background 0.2s;
    cursor: default;
}
.skill-chip:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 22px rgba(26,35,126,0.14);
    border-color: var(--accent);
    background: var(--light);
}
.skill-chip .sk-icon { font-size: 1.6rem; }

/* Skill bar (optional sub-label) */
.skill-chip .sk-bar {
    width: 100%; height: 3px; background: var(--border);
    border-radius: 3px; margin-top: 4px; overflow: hidden;
}
.skill-chip .sk-bar-fill {
    height: 100%; background: var(--accent); border-radius: 3px;
    transform: scaleX(0); transform-origin: left;
    transition: transform 0.8s ease 0.2s;
}
.skill-chip.visible .sk-bar-fill { transform: scaleX(1); }

/* ── PROJECTS ── */
#projects { background: var(--white); }
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 22px;
}
.project-card {
    background: var(--bg);
    border-radius: 16px;
    padding: 26px 22px;
    border: 1.5px solid var(--border);
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    position: relative; overflow: hidden;
}
.project-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--navy), var(--accent));
    transform: scaleX(0); transform-origin: left;
    transition: transform 0.3s ease;
}
.project-card:hover { transform: translateY(-5px); box-shadow: 0 12px 32px rgba(26,35,126,0.12); border-color: #c5cce8; }
.project-card:hover::before { transform: scaleX(1); }

/* Screenshot preview */
.proj-preview {
    margin: -26px -22px 20px;
    height: 180px; overflow: hidden;
    position: relative;
    border-bottom: 1.5px solid var(--border);
}
.proj-preview img {
    width: 100%; height: 100%;
    object-fit: cover; object-position: top;
    display: block;
    transition: transform 5s ease;
}
.project-card:hover .proj-preview img { transform: translateY(-30%); }

.proj-preview-overlay {
    position: absolute; inset: 0;
    background: rgba(26,35,126,0);
    display: flex; align-items: center; justify-content: center;
    transition: background 0.25s;
}
.project-card:hover .proj-preview-overlay { background: rgba(26,35,126,0.5); }

.proj-view-btn {
    background: var(--accent); color: #fff;
    padding: 8px 20px; border-radius: 20px;
    font-size: 0.78rem; font-weight: 700;
    text-decoration: none;
    opacity: 0; transform: translateY(8px);
    transition: opacity 0.25s, transform 0.25s;
}
.project-card:hover .proj-view-btn { opacity: 1; transform: translateY(0); }

.proj-title-link {
    color: var(--accent); font-size: 0.85rem;
    text-decoration: none; margin-left: 6px;
    transition: opacity 0.2s;
}
.proj-title-link:hover { opacity: 0.7; }

.proj-icon {
    width: 48px; height: 48px; border-radius: 12px;
    background: linear-gradient(135deg, var(--navy), var(--accent));
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem; margin-bottom: 14px;
}
.proj-title { font-size: 0.98rem; font-weight: 800; color: var(--navy); margin-bottom: 8px; }
.proj-desc  { font-size: 0.82rem; line-height: 1.65; color: #4b5563; margin-bottom: 14px; }
.proj-tech  { display: flex; flex-wrap: wrap; gap: 6px; }
.tech-tag {
    background: var(--light); color: var(--navy);
    font-size: 0.68rem; font-weight: 700;
    padding: 3px 10px; border-radius: 20px;
    transition: background 0.2s;
}
.tech-tag:hover { background: #c5cde8; }

/* ── EDUCATION ── */
#education { background: var(--bg); }
.edu-card {
    background: var(--white);
    border-radius: 16px;
    padding: 28px;
    border-left: 5px solid var(--accent);
    box-shadow: 0 2px 14px rgba(26,35,126,0.07);
    margin-bottom: 18px;
    display: flex; gap: 20px; align-items: flex-start;
    transition: transform 0.2s, box-shadow 0.2s;
}
.edu-card:hover { transform: translateX(4px); box-shadow: 0 6px 22px rgba(26,35,126,0.12); }
.edu-icon {
    width: 50px; height: 50px; border-radius: 12px;
    background: linear-gradient(135deg, var(--navy), var(--accent));
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; flex-shrink: 0;
}
.edu-degree { font-size: 1rem; font-weight: 800; color: var(--navy); margin-bottom: 4px; }
.edu-school { font-size: 0.86rem; font-weight: 600; color: var(--blue); margin-bottom: 4px; }
.edu-detail { font-size: 0.79rem; color: var(--muted); line-height: 1.6; }

/* ── CERTIFICATIONS ── */
#certifications { background: var(--white); }

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 22px;
}

.cert-card {
    background: var(--bg);
    border-radius: 14px;
    overflow: hidden;
    border: 1.5px solid var(--border);
    box-shadow: 0 2px 10px rgba(26,35,126,0.06);
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    display: flex;
    flex-direction: column;
}
.cert-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 28px rgba(26,35,126,0.13);
    border-color: var(--accent);
}

.cert-card-top { position: relative; }

.cert-thumb {
    width: 100%; height: 160px;
    overflow: hidden; position: relative;
    background: #e8edf5;
}
.cert-thumb img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.35s ease;
}
.cert-card:hover .cert-thumb img { transform: scale(1.04); }

.cert-thumb-overlay {
    position: absolute; inset: 0;
    background: rgba(26,35,126,0);
    display: flex; align-items: center; justify-content: center;
    transition: background 0.25s;
}
.cert-card:hover .cert-thumb-overlay { background: rgba(26,35,126,0.45); }

.cert-view-hint {
    color: #fff; font-size: 0.78rem; font-weight: 700;
    background: rgba(0,0,0,0.35); padding: 6px 14px; border-radius: 20px;
    opacity: 0; transform: translateY(6px);
    transition: opacity 0.25s, transform 0.25s;
    pointer-events: none;
}
.cert-card:hover .cert-view-hint { opacity: 1; transform: translateY(0); }

.cert-no-img {
    height: 120px;
    display: flex; align-items: center; justify-content: center;
}

.cert-body {
    padding: 14px 16px 16px;
    display: flex; flex-direction: column; gap: 4px; flex: 1;
}
.cert-title  { font-size: 0.88rem; font-weight: 800; color: var(--navy); line-height: 1.35; }
.cert-issuer { font-size: 0.74rem; color: var(--muted); margin-top: 2px; }
.cert-meta   { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.cert-date, .cert-code {
    font-size: 0.7rem; color: var(--muted);
    background: var(--white); padding: 3px 9px;
    border-radius: 20px; border: 1px solid var(--border);
}

.cert-view-btn {
    margin-top: 12px; align-self: flex-start;
    background: var(--navy); color: #fff;
    border: none; border-radius: 20px;
    padding: 6px 16px; font-size: 0.75rem; font-weight: 700;
    cursor: pointer; transition: background 0.2s, transform 0.15s;
}
.cert-view-btn:hover { background: var(--blue); transform: translateY(-1px); }

/* ── CONTACT ── */
#contact { background: var(--bg); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; }
.contact-info { display: flex; flex-direction: column; gap: 16px; }
.contact-item {
    display: flex; align-items: flex-start; gap: 14px;
    background: var(--white); padding: 16px 18px; border-radius: 12px;
    box-shadow: 0 2px 8px rgba(26,35,126,0.06);
    transition: transform 0.2s, box-shadow 0.2s;
}
.contact-item:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(26,35,126,0.1); }
.contact-item .ci-icon {
    font-size: 1.4rem; width: 40px; height: 40px;
    background: var(--light); border-radius: 10px;
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.ci-label { font-size: 0.72rem; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }
.ci-value { font-size: 0.86rem; font-weight: 600; color: var(--navy); margin-top: 2px; }

/* Contact Form */
.contact-form-wrap {
    background: var(--white); border-radius: 16px;
    padding: 28px; box-shadow: 0 2px 14px rgba(26,35,126,0.07);
}
.contact-form-wrap h3 {
    font-size: 1rem; font-weight: 800; color: var(--navy); margin-bottom: 6px;
}
.contact-form-wrap > p {
    font-size: 0.79rem; color: var(--muted); margin-bottom: 20px; line-height: 1.55;
}
.form-group { margin-bottom: 14px; }
.form-label { display: block; font-size: 0.77rem; font-weight: 700; color: #374151; margin-bottom: 5px; }
.form-input, .form-textarea {
    width: 100%; padding: 10px 13px;
    border: 1.5px solid var(--border); border-radius: 9px;
    font-size: 0.86rem; color: var(--text);
    outline: none; font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: var(--bg);
}
.form-input:focus, .form-textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(41,121,255,0.1);
    background: #fff;
}
.form-textarea { resize: vertical; min-height: 100px; }
.form-submit {
    width: 100%; background: var(--navy); color: #fff;
    border: none; border-radius: 25px;
    padding: 12px; font-size: 0.88rem; font-weight: 800;
    cursor: pointer; transition: background 0.2s, transform 0.15s;
    margin-top: 4px;
}
.form-submit:hover { background: var(--blue); transform: translateY(-1px); }
.form-submit.sending { background: #e65100; }
.form-submit.sent    { background: #2e7d32; }

/* Toast */
#toast {
    position: fixed; bottom: 28px; right: 28px;
    background: #1b5e20; color: #fff;
    padding: 12px 20px; border-radius: 10px;
    font-size: 0.85rem; font-weight: 600;
    box-shadow: 0 4px 18px rgba(0,0,0,0.2);
    opacity: 0; transform: translateY(12px);
    transition: opacity 0.3s, transform 0.3s;
    pointer-events: none; z-index: 9999;
}
#toast.show { opacity: 1; transform: translateY(0); }

/* ── FOOTER ── */
footer {
    background: var(--navy); color: rgba(255,255,255,0.55);
    text-align: center; padding: 26px 24px;
    font-size: 0.78rem;
}
footer span { color: #fff; font-weight: 700; }
.footer-links { display: flex; justify-content: center; gap: 18px; margin-top: 8px; }
.footer-links a {
    color: rgba(255,255,255,0.45); font-size: 0.76rem;
    text-decoration: none; transition: color 0.2s;
}
.footer-links a:hover { color: #fff; }

/* ── BACK TO TOP ── */
#backToTop {
    position: fixed; bottom: 28px; left: 28px;
    width: 40px; height: 40px; border-radius: 50%;
    background: var(--navy); color: #fff;
    border: none; cursor: pointer; font-size: 1rem;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 14px rgba(0,0,0,0.2);
    opacity: 0; transform: translateY(10px);
    transition: opacity 0.3s, transform 0.3s, background 0.2s;
    pointer-events: none; z-index: 500;
}
#backToTop.show { opacity: 1; transform: translateY(0); pointer-events: all; }
#backToTop:hover { background: var(--blue); }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
    .hero-inner { grid-template-columns: 1fr; gap: 40px; text-align: center; }
    .hero-left   { align-items: center; }
    .hero-bio    { margin: 0 auto 30px; }
    .hero-btns   { justify-content: center; }
    .hero-socials{ justify-content: center; }
    .hero-photo-wrap { width: 280px; height: 310px; }
    #hero { padding: 90px 24px 50px; }
}
@media (max-width: 768px) {
    nav { padding: 0 18px; }
    .nav-links    { display: none; }
    .nav-hamburger{ display: flex; }
    .about-grid   { grid-template-columns: 1fr; gap: 28px; }
    .contact-grid { grid-template-columns: 1fr; }
    .about-details{ grid-template-columns: 1fr; }
    section       { padding: 60px 18px; }
    .section-title{ font-size: 1.5rem; }
}
@media (max-width: 480px) {
    .hero-btns { flex-direction: column; align-items: center; }
    .btn-primary, .btn-outline { width: 220px; text-align: center; }
    .hero-greeting { font-size: 1.8rem; }
    .hero-photo-wrap { width: 220px; height: 240px; }
}