/* ============================================================
   Rupesh Kumar Prasad — personal site
   Shared stylesheet
   ============================================================ */

:root {
    --navy:      #14263f;
    --navy-soft: #223a5e;
    --accent:    #2f6f8f;
    --accent-2:  #3f8fb0;
    --ink:       #1c2733;
    --muted:     #5a6b7b;
    --line:      #e2e8ef;
    --bg:        #f6f8fb;
    --card:      #ffffff;
    --maxw:      880px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.65;
    font-size: 17px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--navy); text-decoration: underline; }

/* ---------- Navigation bar ---------- */
.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(20, 38, 63, 0.97);
    backdrop-filter: saturate(140%) blur(6px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-inner {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 60px;
    flex-wrap: wrap;
    gap: 4px 16px;
}

.nav-brand {
    font-family: "Fraunces", Georgia, serif;
    font-weight: 600;
    font-size: 1.15rem;
    color: #fff;
    letter-spacing: 0.4px;
    white-space: nowrap;
}
.nav-brand:hover { color: #fff; text-decoration: none; }

.nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: 2px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    display: inline-block;
    padding: 8px 13px;
    color: #cdd8e4;
    font-size: 0.92rem;
    font-weight: 500;
    border-radius: 7px;
    transition: background 0.15s, color 0.15s;
}
.nav-links a:hover { color: #fff; background: rgba(255, 255, 255, 0.10); text-decoration: none; }
.nav-links a.active { color: #fff; background: var(--accent); }

/* Hamburger button — hidden on desktop, shown on mobile */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 42px;
    height: 38px;
    padding: 0 9px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 8px;
    cursor: pointer;
}
.nav-toggle span {
    display: block;
    height: 2px;
    width: 100%;
    background: #fff;
    border-radius: 2px;
    transition: transform 0.25s ease, opacity 0.2s ease;
}
/* Animate to an "X" when open */
.nav.open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav.open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero / page header ---------- */
.hero {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-soft) 100%);
    color: #fff;
    padding: 60px 24px 54px;
    text-align: center;
}
.hero .inner { max-width: 1100px; margin: 0 auto; }

.hero h1 {
    font-family: "Fraunces", Georgia, serif;
    font-weight: 600;
    font-size: clamp(2.1rem, 6vw, 3rem);
    letter-spacing: 0.5px;
    margin: 0 0 10px;
}

.hero .role {
    font-size: clamp(1rem, 3vw, 1.2rem);
    font-weight: 500;
    color: #dfe9f2;
    margin: 0 0 6px;
}

.hero .location {
    font-size: 0.95rem;
    color: #aebfd0;
    margin: 0 0 18px;
}

.badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 4px;
}

.badge {
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.3px;
    color: #eaf2f8;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.22);
    padding: 5px 13px;
    border-radius: 999px;
}
a.badge { transition: background 0.15s, border-color 0.15s; }
a.badge:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.22);
    border-color: rgba(255, 255, 255, 0.4);
    text-decoration: none;
}

/* Compact header for interior pages */
.page-head {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-soft) 100%);
    color: #fff;
    padding: 42px 24px 40px;
    text-align: center;
}
.page-head h1 {
    font-family: "Fraunces", Georgia, serif;
    font-weight: 600;
    font-size: clamp(1.7rem, 5vw, 2.3rem);
    margin: 0 0 6px;
}
.page-head p { margin: 0; color: #c6d3e2; font-size: 1rem; }

/* ---------- Layout ---------- */
main {
    max-width: var(--maxw);
    margin: -28px auto 0;
    padding: 0 20px 40px;
}
main.flush { margin-top: 34px; }

section.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 28px 32px;
    margin-bottom: 22px;
    box-shadow: 0 6px 24px rgba(20, 38, 63, 0.06);
}

h2 {
    font-family: "Fraunces", Georgia, serif;
    font-weight: 600;
    font-size: 1.35rem;
    color: var(--navy);
    margin: 0 0 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--line);
}

h3 { font-size: 1.08rem; color: var(--navy); margin: 0 0 4px; }

p { margin: 0 0 14px; }
p:last-child { margin-bottom: 0; }

/* ---------- Bullet lists (two-column) ---------- */
.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 28px;
}
.grid ul, ul.dots { margin: 0; padding: 0; list-style: none; }

.grid li, ul.dots li {
    padding: 7px 0 7px 22px;
    position: relative;
}
.grid li::before, ul.dots li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 15px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent-2);
}

/* ---------- Tag chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 9px; }
.chip {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--navy-soft);
    background: #eaf1f6;
    border: 1px solid #d5e2ea;
    padding: 6px 13px;
    border-radius: 999px;
}

/* ---------- Timeline (experience) ---------- */
.timeline { position: relative; margin: 0; padding: 0 0 0 26px; list-style: none; }
.timeline::before {
    content: "";
    position: absolute;
    left: 6px;
    top: 6px;
    bottom: 6px;
    width: 2px;
    background: var(--line);
}
.timeline > li { position: relative; padding: 0 0 26px; }
.timeline > li:last-child { padding-bottom: 0; }
.timeline > li::before {
    content: "";
    position: absolute;
    left: -26px;
    top: 6px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent);
    border: 3px solid var(--bg);
    box-shadow: 0 0 0 2px var(--accent);
}
.tl-meta { color: var(--muted); font-size: 0.9rem; margin: 2px 0 8px; }
.tl-company { font-weight: 600; color: var(--accent); }
.timeline ul { margin: 8px 0 0; padding-left: 18px; }
.timeline ul li { margin-bottom: 4px; }

/* ---------- Contact ---------- */
.contact { display: flex; flex-wrap: wrap; gap: 12px 22px; align-items: center; }
.btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-weight: 500;
    background: var(--navy);
    color: #fff;
    padding: 10px 18px;
    border-radius: 8px;
}
.btn:hover { background: var(--accent); color: #fff; text-decoration: none; }
.btn.ghost { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.btn.ghost:hover { background: var(--accent); color: #fff; }

/* ---------- CTA row on home ---------- */
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 6px; }

/* ---------- Social icon ---------- */
.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    color: #fff;
    background: #0a66c2;
    transition: background 0.15s, transform 0.15s;
    vertical-align: middle;
}
.social-icon:hover { background: var(--navy); transform: translateY(-1px); text-decoration: none; }
.social-icon svg { width: 18px; height: 18px; fill: currentColor; display: block; }

/* LinkedIn icon inside a light-button context (contact page) */
.btn .social-svg { width: 18px; height: 18px; fill: currentColor; }

/* ---------- Image modal ---------- */
.modal-trigger {
    color: var(--accent);
    cursor: pointer;
    text-decoration: none;
}
.modal-trigger:hover { color: var(--navy); text-decoration: underline; }

.modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(15, 25, 40, 0.82);
    padding: 28px 20px;
    /* centering */
    align-items: center;
    justify-content: center;
    animation: modal-fade 0.15s ease-out;
}
.modal.open { display: flex; }

@keyframes modal-fade { from { opacity: 0; } to { opacity: 1; } }

.modal-content {
    position: relative;
    max-width: 1100px;
    width: 100%;
    max-height: 92vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.modal-content img {
    max-width: 100%;
    max-height: 84vh;
    width: auto;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}
.modal-caption {
    color: #dfe9f2;
    font-size: 0.9rem;
    margin-top: 12px;
    text-align: center;
}
.modal-close {
    position: absolute;
    top: -14px;
    right: -6px;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: #fff;
    color: var(--navy);
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
    transition: transform 0.15s;
}
.modal-close:hover { transform: scale(1.08); }

@media (max-width: 620px) {
    .modal-close { top: -10px; right: 0; }
}

/* ---------- Footer ---------- */
footer {
    text-align: center;
    color: var(--muted);
    font-size: 0.85rem;
    padding: 24px 20px 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}
footer a { color: var(--muted); }

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
    .hero { padding: 46px 20px 44px; }
    section.card { padding: 22px 20px; }
    .grid { grid-template-columns: 1fr; gap: 0; }

    .nav-inner {
        min-height: 54px;
        flex-wrap: nowrap;
    }

    /* Show the hamburger */
    .nav-toggle { display: flex; }

    /* Collapse the links into a dropdown panel */
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: rgba(20, 38, 63, 0.99);
        border-bottom: 1px solid rgba(255, 255, 255, 0.10);
        padding: 6px 0;
        /* hidden by default */
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        pointer-events: none;
        transition: max-height 0.28s ease, opacity 0.2s ease;
    }
    .nav.open .nav-links {
        max-height: 340px;
        opacity: 1;
        pointer-events: auto;
    }
    .nav-links li { width: 100%; }
    .nav-links a {
        display: block;
        padding: 13px 22px;
        border-radius: 0;
        font-size: 1rem;
    }
}