/* ================================================================
   science_department.css  —  LNMS College Science Department
   Follows the same design system as home.css & principals_list.css:
     · CSS variables (blue / green tokens)
     · Poppins + Playfair Display + DM Sans
     · Mini hero identical to principals_list.css
     · Card-based subject grid replacing raw <table>
   ================================================================ */

/* ── Font import (deduped by browser if already loaded) ───────── */
@font-face {
    font-family: 'Poppins';
    src: url('assets/fonts/Poppins-Regular.ttf') format('truetype');
    font-weight: 400;
}

@font-face {
    font-family: 'Poppins';
    src: url('assets/fonts/Poppins-Medium.ttf') format('truetype');
    font-weight: 500;
}

@font-face {
    font-family: 'Poppins';
    src: url('assets/fonts/Poppins-SemiBold.ttf') format('truetype');
    font-weight: 600;
}

@font-face {
    font-family: 'Poppins';
    src: url('assets/fonts/Poppins-Bold.ttf') format('truetype');
    font-weight: 700;
}

/* ── Design token mirror (from home.css / principals_list.css) ── */
:root {
    --blue: #1E3A8A;
    --blue-dark: #162d6e;
    --blue-mid: #2a4fa8;
    --blue-light: #dbeafe;
    --green: #22C55E;
    --green-dark: #16a34a;
    --green-light: #dcfce7;
    --bg: #F8FAFC;
    --card: #ffffff;
    --text: #0F172A;
    --text-muted: #475569;
    --border: #e2e8f0;
    --shadow-sm: 0 2px 10px rgba(15,23,42,.08);
    --shadow-md: 0 6px 24px rgba(15,23,42,.12);
    --shadow-lg: 0 16px 48px rgba(15,23,42,.18);
    --shadow-blue: 0 8px 28px rgba(30,58,138,.28);
    --r-sm: 8px;
    --r-md: 14px;
    --r-lg: 20px;
    --r-pill: 50px;
    --t: 0.3s ease;
    --font: 'Poppins','Noto Sans Devanagari',sans-serif;
}

/* ================================================================
   1. MINI HERO  —  identical markup & styling to principals_list
   ================================================================ */

.pl-mini-hero {
    position: relative;
    width: 100%;
    height: 320px;
    min-height: 260px;
    overflow: hidden;
    background: linear-gradient(135deg, #0f172a 0%, #1E3A8A 55%, #2a4fa8 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'DM Sans', sans-serif;
}

/* Noise texture overlay */
.pl-mini-hero__overlay {
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
    opacity: 0.22;
    pointer-events: none;
    z-index: 1;
}

/* Decorative rings */
.pl-mini-hero__ring {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    z-index: 2;
}

.pl-mini-hero__ring--lg {
    top: -90px;
    right: -90px;
    width: 340px;
    height: 340px;
    border: 64px solid rgba(30,58,138,.22);
}

.pl-mini-hero__ring--sm {
    bottom: -55px;
    left: -55px;
    width: 210px;
    height: 210px;
    border: 42px solid rgba(34,197,94,.10);
}

/* Animated grid lines */
.pl-mini-hero__grid {
    position: absolute;
    inset: 0;
    z-index: 2;
    pointer-events: none;
    background-image: linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
    background-size: 48px 48px;
    animation: plGridDrift 18s linear infinite;
}

@keyframes plGridDrift {
    from {
        background-position: 0 0;
    }

    to {
        background-position: 48px 48px;
    }
}

/* Content block */
.pl-mini-hero__body {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
}

/* Breadcrumb */
.pl-mini-hero__breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 18px;
    opacity: 0;
    transform: translateY(12px);
    animation: plFadeUp 0.6s cubic-bezier(0.22,1,0.36,1) 0.1s forwards;
}

.pl-mini-hero__bc-link {
    font-size: .78rem;
    font-weight: 500;
    color: rgba(255,255,255,.55);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: color 0.2s ease;
}

    .pl-mini-hero__bc-link:hover {
        color: var(--green);
        text-decoration: none;
    }

.pl-mini-hero__bc-sep {
    color: rgba(255,255,255,.25);
    font-size: .78rem;
}

.pl-mini-hero__bc-current {
    font-size: .78rem;
    font-weight: 600;
    color: rgba(255,255,255,.80);
}

/* Eyebrow badge */
.pl-mini-hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(34,197,94,.15);
    border: 1px solid rgba(34,197,94,.45);
    color: var(--green);
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .14em;
    text-transform: uppercase;
    padding: 5px 18px;
    border-radius: 50px;
    margin-bottom: 16px;
    opacity: 0;
    transform: translateY(14px);
    animation: plFadeUp 0.65s cubic-bezier(0.22,1,0.36,1) 0.25s forwards;
}

.pl-mini-hero__badge-dot {
    width: 6px;
    height: 6px;
    background: var(--green);
    border-radius: 50%;
    animation: plPulse 2s ease-in-out infinite;
}

/* Heading */
.pl-mini-hero__heading {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 800;
    color: #fff;
    line-height: 1.12;
    letter-spacing: -.02em;
    margin: 0 0 12px;
    opacity: 0;
    transform: translateY(20px);
    animation: plFadeUp 0.7s cubic-bezier(0.22,1,0.36,1) 0.42s forwards;
}

    .pl-mini-hero__heading em {
        font-style: normal;
        color: var(--green);
        position: relative;
    }

        .pl-mini-hero__heading em::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -3px;
            width: 100%;
            height: 3px;
            background: var(--green);
            border-radius: 2px;
            transform-origin: left;
            transform: scaleX(0);
            animation: plUnderline 0.55s cubic-bezier(0.22,1,0.36,1) 1.1s forwards;
        }

/* Sub text */
.pl-mini-hero__sub {
    color: rgba(255,255,255,.62);
    font-size: clamp(.85rem, 1.6vw, 1rem);
    font-weight: 300;
    max-width: 480px;
    line-height: 1.65;
    margin: 0;
    opacity: 0;
    transform: translateY(16px);
    animation: plFadeUp 0.7s cubic-bezier(0.22,1,0.36,1) 0.58s forwards;
}

/* Keyframes */
@keyframes plFadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes plUnderline {
    to {
        transform: scaleX(1);
    }
}

@keyframes plPulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: .5;
        transform: scale(.8);
    }
}

/* Mini hero responsive */
@media (max-width: 768px) {
    .pl-mini-hero {
        height: 260px;
        min-height: 220px;
    }

    .pl-mini-hero__ring--lg {
        width: 200px;
        height: 200px;
        border-width: 40px;
        top: -60px;
        right: -60px;
    }
}

@media (max-width: 480px) {
    .pl-mini-hero {
        height: 230px;
    }

    .pl-mini-hero__sub {
        display: none;
    }
}

/* ================================================================
   2. AOS ANIMATION SUPPORT
   ================================================================ */
[data-aos] {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.65s cubic-bezier(0.22,1,0.36,1), transform 0.65s cubic-bezier(0.22,1,0.36,1);
}

    [data-aos].aos-animate {
        opacity: 1;
        transform: translateY(0);
    }

/* ================================================================
   3. SECTION SHELL
   ================================================================ */
.sd-area {
    background: var(--bg);
    padding: 90px 0 100px;
    position: relative;
    overflow: hidden;
}

    /* Subtle dot-grid background texture */
    .sd-area::before {
        content: '';
        position: absolute;
        inset: 0;
        background-image: radial-gradient(circle, rgba(30,58,138,.06) 1px, transparent 1px);
        background-size: 28px 28px;
        pointer-events: none;
        z-index: 0;
    }

    .sd-area .container {
        position: relative;
        z-index: 1;
    }

/* ================================================================
   4. SECTION TITLE BLOCK
   ================================================================ */
.sd-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-family: var(--font);
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--green);
    background: var(--green-light);
    padding: 5px 14px;
    border-radius: var(--r-pill);
    margin-bottom: 14px;
}

.sd-section-heading {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: clamp(1.75rem, 3.5vw, 2.6rem);
    font-weight: 800;
    color: var(--text);
    line-height: 1.2;
    letter-spacing: -.02em;
    margin: 0 0 14px;
}

.sd-section-sub {
    font-family: 'DM Sans', sans-serif;
    font-size: clamp(.92rem, 1.6vw, 1.05rem);
    font-weight: 400;
    color: var(--text-muted);
    max-width: 560px;
    margin: 0 auto 60px;
    line-height: 1.7;
}

/* ================================================================
   5. SUBJECT CARDS GRID
   ================================================================ */
.sd-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}

/* Individual subject card */
.sd-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    padding: 28px 24px 24px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--t), border-color var(--t), transform var(--t);
    cursor: default;
}

/* Left colour accent strip */
.sd-card__accent {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--blue) 0%, var(--green) 100%);
    border-radius: var(--r-lg) 0 0 var(--r-lg);
    transition: width var(--t);
}

/* Icon circle */
.sd-card__icon {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--blue-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--blue);
    font-size: 1.15rem;
    flex-shrink: 0;
    transition: background var(--t), color var(--t);
}

/* Subject name */
.sd-card__name {
    font-family: var(--font);
    font-size: clamp(1rem, 1.8vw, 1.1rem);
    font-weight: 700;
    color: var(--text);
    margin: 0;
    line-height: 1.3;
    transition: color var(--t);
}

/* Short description */
.sd-card__desc {
    font-family: 'DM Sans', sans-serif;
    font-size: .82rem;
    color: var(--text-muted);
    line-height: 1.55;
    margin: 0;
}

/* ── Hover state ─────────────────────────────────────────────── */
.sd-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--blue-light);
    transform: translateY(-4px);
}

    .sd-card:hover .sd-card__accent {
        width: 6px;
    }

    .sd-card:hover .sd-card__icon {
        background: var(--blue);
        color: #fff;
    }

    .sd-card:hover .sd-card__name {
        color: var(--blue);
    }

/* ── Alternate (even) cards: green accent tint ───────────────── */
.sd-card:nth-child(even) .sd-card__accent {
    background: linear-gradient(180deg, var(--green) 0%, var(--blue) 100%);
}

.sd-card:nth-child(even) .sd-card__icon {
    background: var(--green-light);
    color: var(--green-dark);
}

.sd-card:nth-child(even):hover .sd-card__icon {
    background: var(--green-dark);
    color: #fff;
}

.sd-card:nth-child(even):hover .sd-card__name {
    color: var(--green-dark);
}

/* ================================================================
   6. RESPONSIVE
   ================================================================ */
@media (max-width: 767px) {
    .sd-area {
        padding: 60px 0 70px;
    }

    .sd-grid {
        grid-template-columns: 1fr 1fr;
        gap: 14px;
    }

    .sd-card--featured {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding: 22px 18px;
    }
}

@media (max-width: 480px) {
    .sd-grid {
        grid-template-columns: 1fr;
    }
}