/* ================================================================
   syllabus.css  —  LNMS College Syllabus Page
   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
     · Grouped syllabus rows replacing raw <table>
   ================================================================ */

@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 tokens ───────────────────────────────────────────── */
: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 to principals_list.css
   ================================================================ */
.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;
}

.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;
}

.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);
}

.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; }
}

.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;
}

.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); }

.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;
}

.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;
}

.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 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); }
}

@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
   ================================================================ */
.sy-area {
    background: var(--bg);
    padding: 90px 0 100px;
    position: relative;
    overflow: hidden;
}
.sy-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;
}
.sy-area .container { position: relative; z-index: 1; }

/* ================================================================
   4. SECTION TITLE
   ================================================================ */
.sy-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;
}
.sy-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;
}
.sy-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 52px; line-height: 1.7;
}

/* ================================================================
   5. FILTER TABS
   ================================================================ */
.sy-filters {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.sy-filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-family: var(--font);
    font-size: .8rem;
    font-weight: 600;
    letter-spacing: .04em;
    padding: 9px 22px;
    border-radius: var(--r-pill);
    border: 1.5px solid var(--border);
    background: var(--card);
    color: var(--text-muted);
    cursor: pointer;
    transition: background var(--t), color var(--t), border-color var(--t), box-shadow var(--t);
    user-select: none;
}
.sy-filter-btn:hover {
    border-color: var(--blue-light);
    color: var(--blue);
    background: var(--blue-light);
}
.sy-filter-btn.is-active {
    background: var(--blue);
    border-color: var(--blue);
    color: #fff;
    box-shadow: var(--shadow-blue);
}
.sy-filter-btn.is-active i { color: #fff; }

/* ================================================================
   6. FACULTY GROUP BLOCK
   ================================================================ */
.sy-group {
    max-width: 860px;
    margin: 0 auto 48px;
    transition: opacity 0.35s ease, transform 0.35s ease;
}
.sy-group.is-hidden {
    display: none;
}

/* Group header */
.sy-group__header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 16px;
    padding-bottom: 14px;
    border-bottom: 2px solid var(--border);
}
.sy-group__icon {
    width: 44px; height: 44px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem; flex-shrink: 0;
}
.sy-group__icon--blue  { background: var(--blue-light);  color: var(--blue); }
.sy-group__icon--green { background: var(--green-light); color: var(--green-dark); }

.sy-group__title {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: clamp(1.15rem, 2.2vw, 1.4rem);
    font-weight: 800; color: var(--text); margin: 0; line-height: 1.2;
}
.sy-group__count {
    margin-left: auto;
    font-family: var(--font);
    font-size: .75rem; font-weight: 700;
    color: var(--text-muted);
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 4px 12px;
    border-radius: var(--r-pill);
    white-space: nowrap;
}

/* ================================================================
   7. SYLLABUS ROW CARD  (replaces <tr>)
   ================================================================ */
.sy-list { display: flex; flex-direction: column; gap: 10px; }

.sy-row {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    padding: 16px 20px;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    transition: box-shadow var(--t), border-color var(--t), transform var(--t);
}
.sy-row:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--blue-light);
    transform: translateX(4px);
}

/* Left accent strip */
.sy-row__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-md) 0 0 var(--r-md);
    transition: width var(--t);
}
.sy-row:hover .sy-row__accent { width: 6px; }

/* Serial number badge */
.sy-row__serial {
    flex-shrink: 0;
    width: 34px; height: 34px; border-radius: 50%;
    background: var(--bg); border: 1.5px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    font-family: 'Playfair Display', serif;
    font-size: .85rem; font-weight: 800;
    color: var(--blue); transition: background var(--t), color var(--t), border-color var(--t);
}
.sy-row:hover .sy-row__serial {
    background: var(--blue); color: #fff; border-color: var(--blue);
}

/* PDF icon */
.sy-row__pdf-icon {
    flex-shrink: 0;
    width: 38px; height: 38px; border-radius: var(--r-sm);
    background: #fee2e2; color: #dc2626;
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem;
    transition: background var(--t), color var(--t);
}
.sy-row:hover .sy-row__pdf-icon { background: #dc2626; color: #fff; }

/* Course name */
.sy-row__name {
    flex: 1; min-width: 0;
    font-family: var(--font);
    font-size: clamp(.92rem, 1.7vw, 1rem);
    font-weight: 600; color: var(--text); margin: 0;
    transition: color var(--t);
}
.sy-row:hover .sy-row__name { color: var(--blue); }

/* Action button */
.sy-row__btn {
    flex-shrink: 0;
    display: inline-flex; align-items: center; gap: 7px;
    font-family: var(--font); font-size: .78rem; font-weight: 600;
    letter-spacing: .04em; color: var(--blue);
    background: var(--blue-light);
    padding: 8px 18px; border-radius: var(--r-pill);
    text-decoration: none; white-space: nowrap;
    transition: background var(--t), color var(--t), box-shadow var(--t), transform var(--t);
    border: none;
}
.sy-row__btn:hover {
    background: var(--blue); color: #fff;
    box-shadow: var(--shadow-blue); transform: translateY(-1px);
    text-decoration: none;
}

/* Alternate rows: green tint */
.sy-row:nth-child(even) .sy-row__accent {
    background: linear-gradient(180deg, var(--green) 0%, var(--blue) 100%);
}
.sy-row:nth-child(even) .sy-row__serial { color: var(--green-dark); }
.sy-row:nth-child(even):hover .sy-row__serial {
    background: var(--green-dark); border-color: var(--green-dark); color: #fff;
}
.sy-row:nth-child(even) .sy-row__btn {
    color: var(--green-dark); background: var(--green-light);
}
.sy-row:nth-child(even) .sy-row__btn:hover {
    background: var(--green-dark); color: #fff;
    box-shadow: 0 8px 28px rgba(22,163,74,.28);
}
.sy-row:nth-child(even):hover .sy-row__name { color: var(--green-dark); }

/* ================================================================
   8. RESPONSIVE
   ================================================================ */
@media (max-width: 767px) {
    .sy-area { padding: 60px 0 70px; }
    .sy-row  { padding: 14px 16px; gap: 12px; }
    .sy-row__pdf-icon { display: none; }
}
@media (max-width: 480px) {
    .sy-row__serial { display: none; }
    .sy-row__btn    { padding: 7px 14px; font-size: .74rem; }
}