/**
 * ============================================================================
 * EDEXCEL COLLEGE — CHEMISTRY 2027 & 2028 MARKETING PLATFORM STYLESHEET
 * ----------------------------------------------------------------------------
 * Scoped Namespace : .pchem-*
 * Palette          : Deep Midnight Navy (#050d1a), Molecular Cyan (#00d4ff),
 *                    Examiner Gold (#f59e0b), Conversion Emerald (#25d366)
 * Accessibility    : WCAG 2.1 AA Contrast Compliant
 * ============================================================================
 */

:root {
    --pchem-navy-deep: #050d1a;
    --pchem-navy-base: #0a1628;
    --pchem-navy-card: #0e223d;
    --pchem-navy-card-hover: #142e50;
    --pchem-navy-border: rgba(0, 212, 255, 0.18);
    --pchem-cyan: #00d4ff;
    --pchem-cyan-glow: rgba(0, 212, 255, 0.25);
    --pchem-cyan-dim: #0284c7;
    --pchem-blue-accent: #38bdf8;
    --pchem-gold: #f59e0b;
    --pchem-gold-glow: rgba(245, 158, 11, 0.25);
    --pchem-emerald: #25d366;
    --pchem-emerald-dark: #128c7e;
    --pchem-surface-light: #ffffff;
    --pchem-surface-muted: #f8fafc;
    --pchem-surface-subtle: #f1f5f9;
    --pchem-text-main: #0f172a;
    --pchem-text-muted: #475569;
    --pchem-text-light: #f8fafc;
    --pchem-text-light-muted: #94a3b8;
    --pchem-radius-sm: 8px;
    --pchem-radius-md: 14px;
    --pchem-radius-lg: 20px;
    --pchem-radius-xl: 28px;
    --pchem-transition: all 0.24s cubic-bezier(0.16, 1, 0.3, 1);
    --pchem-font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --pchem-font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

/* Base resets within scope */
.pchem-wrapper {
    background-color: var(--pchem-navy-deep);
    color: var(--pchem-text-light);
    font-family: var(--pchem-font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
}

.pchem-wrapper * {
    box-sizing: border-box;
}

.pchem-container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* Subtle scientific background grid & molecular lattice */
.pchem-scientific-bg {
    position: relative;
    background-image: 
        radial-gradient(circle at 15% 20%, rgba(0, 212, 255, 0.08) 0%, transparent 45%),
        radial-gradient(circle at 85% 65%, rgba(245, 158, 11, 0.06) 0%, transparent 40%),
        radial-gradient(circle at 50% 90%, rgba(2, 132, 199, 0.07) 0%, transparent 50%),
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 100% 100%, 100% 100%, 100% 100%, 48px 48px, 48px 48px;
}

/* ============================================================================
   TOP NAVIGATION BAR
   ============================================================================ */
.pchem-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(5, 13, 26, 0.94);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--pchem-navy-border);
    transition: var(--pchem-transition);
}

.pchem-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.pchem-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--pchem-text-light);
}

.pchem-brand-icon {
    width: 42px;
    height: 42px;
    border-radius: var(--pchem-radius-md);
    background: linear-gradient(135deg, var(--pchem-cyan), var(--pchem-cyan-dim));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--pchem-navy-deep);
    font-size: 1.25rem;
    font-weight: 800;
    box-shadow: 0 0 16px var(--pchem-cyan-glow);
}

.pchem-brand-title {
    font-size: 1.15rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.pchem-brand-badge {
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--pchem-cyan);
}

.pchem-nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.pchem-nav-link {
    color: var(--pchem-text-light-muted);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 600;
    transition: var(--pchem-transition);
}

.pchem-nav-link:hover,
.pchem-nav-link:focus {
    color: var(--pchem-cyan);
}

.pchem-nav-cta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* ============================================================================
   BUTTONS & ACTION TARGETS (MIN 48PX)
   ============================================================================ */
.pchem-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 48px;
    padding: 0.75rem 1.4rem;
    border-radius: var(--pchem-radius-md);
    font-size: 0.92rem;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    transition: var(--pchem-transition);
    border: 1px solid transparent;
    line-height: 1;
}

.pchem-btn-cyan {
    background: linear-gradient(135deg, var(--pchem-cyan), var(--pchem-cyan-dim));
    color: var(--pchem-navy-deep);
    box-shadow: 0 4px 18px var(--pchem-cyan-glow);
}

.pchem-btn-cyan:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 212, 255, 0.45);
    color: var(--pchem-navy-deep);
}

.pchem-btn-emerald {
    background: linear-gradient(135deg, var(--pchem-emerald), var(--pchem-emerald-dark));
    color: #ffffff;
    box-shadow: 0 4px 18px rgba(37, 211, 102, 0.3);
}

.pchem-btn-emerald:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(37, 211, 102, 0.45);
    color: #ffffff;
}

.pchem-btn-outline {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--pchem-text-light);
}

.pchem-btn-outline:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--pchem-cyan);
    color: var(--pchem-cyan);
}

.pchem-btn-gold {
    background: linear-gradient(135deg, var(--pchem-gold), #d97706);
    color: #ffffff;
    box-shadow: 0 4px 18px var(--pchem-gold-glow);
}

.pchem-btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(245, 158, 11, 0.45);
    color: #ffffff;
}

/* ============================================================================
   HERO SECTION
   ============================================================================ */
.pchem-hero {
    padding: 3.5rem 0 4rem;
    position: relative;
    overflow: hidden;
}

.pchem-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--pchem-cyan);
    color: var(--pchem-cyan);
    font-size: 0.78rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 1.25rem;
}

.pchem-hero-title {
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}

.pchem-hero-title span {
    background: linear-gradient(135deg, #ffffff 40%, var(--pchem-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.pchem-hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.45rem);
    font-weight: 700;
    color: var(--pchem-cyan);
    margin-bottom: 1.25rem;
}

.pchem-hero-desc {
    font-size: 1.05rem;
    line-height: 1.65;
    color: var(--pchem-text-light-muted);
    max-width: 640px;
    margin-bottom: 2rem;
}

.pchem-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.pchem-hero-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.pchem-hero-stat {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.pchem-hero-stat-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--pchem-radius-md);
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--pchem-cyan);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.pchem-hero-stat-text strong {
    display: block;
    font-size: 0.95rem;
    color: var(--pchem-text-light);
}

.pchem-hero-stat-text span {
    font-size: 0.78rem;
    color: var(--pchem-text-light-muted);
}

/* ============================================================================
   UNIT TEST EXAMINATION SPOTLIGHT (PHASE 5)
   ============================================================================ */
.pchem-exam-banner {
    background: linear-gradient(135deg, rgba(14, 34, 61, 0.95), rgba(8, 22, 42, 0.98));
    border: 2px solid var(--pchem-gold);
    border-radius: var(--pchem-radius-xl);
    padding: 2.25rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5), 0 0 30px var(--pchem-gold-glow);
    margin: 2rem 0 4rem;
}

.pchem-exam-banner::before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.12) 0%, transparent 70%);
    pointer-events: none;
}

.pchem-exam-grid {
    display: grid;
    grid-template-columns: 1.6fr 1.1fr;
    gap: 2rem;
    align-items: center;
}

.pchem-exam-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--pchem-gold);
    color: #000000;
    padding: 0.35rem 0.9rem;
    border-radius: 999px;
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}

.pchem-exam-title {
    font-size: clamp(1.5rem, 3.5vw, 2.2rem);
    font-weight: 900;
    color: #ffffff;
    line-height: 1.2;
    margin-bottom: 0.5rem;
}

.pchem-exam-subtitle {
    font-size: 1.15rem;
    color: var(--pchem-gold);
    font-weight: 800;
    margin-bottom: 1.25rem;
}

.pchem-exam-topics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 0.75rem;
    margin: 1.25rem 0;
}

.pchem-topic-tag {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--pchem-radius-sm);
    padding: 0.6rem 0.85rem;
    font-size: 0.84rem;
    font-weight: 700;
    color: var(--pchem-text-light);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pchem-topic-tag i {
    color: var(--pchem-cyan);
    font-size: 0.9rem;
}

.pchem-exam-info-box {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: var(--pchem-radius-lg);
    padding: 1.5rem;
}

.pchem-exam-detail-row {
    display: flex;
    align-items: flex-start;
    gap: 0.85rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.pchem-exam-detail-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.pchem-exam-detail-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--pchem-radius-sm);
    background: rgba(245, 158, 11, 0.15);
    color: var(--pchem-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.pchem-exam-detail-meta strong {
    display: block;
    font-size: 0.92rem;
    color: #ffffff;
}

.pchem-exam-detail-meta span {
    font-size: 0.8rem;
    color: var(--pchem-text-light-muted);
}

.pchem-notice-callout {
    background: rgba(37, 211, 102, 0.1);
    border-left: 4px solid var(--pchem-emerald);
    padding: 0.85rem 1rem;
    border-radius: var(--pchem-radius-sm);
    margin-top: 1rem;
    font-size: 0.84rem;
    color: #d1fae5;
}

/* ============================================================================
   INTERACTIVE COURSE SELECTION CARDS (PHASE 4)
   ============================================================================ */
.pchem-section {
    padding: 4.5rem 0;
    position: relative;
}

.pchem-section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 3rem;
}

.pchem-section-eyebrow {
    font-size: 0.82rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--pchem-cyan);
    margin-bottom: 0.5rem;
}

.pchem-section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.6rem);
    font-weight: 900;
    letter-spacing: -0.02em;
    color: #ffffff;
    margin-bottom: 0.75rem;
}

.pchem-section-desc {
    font-size: 1rem;
    color: var(--pchem-text-light-muted);
}

.pchem-course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 1.5rem;
}

.pchem-course-card {
    background: var(--pchem-navy-card);
    border: 1px solid var(--pchem-navy-border);
    border-radius: var(--pchem-radius-lg);
    padding: 2rem 1.6rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--pchem-transition);
    position: relative;
    cursor: pointer;
}

.pchem-course-card:hover {
    transform: translateY(-4px);
    background: var(--pchem-navy-card-hover);
    border-color: var(--pchem-cyan);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35), 0 0 20px var(--pchem-cyan-glow);
}

.pchem-course-card.is-selected {
    border-color: var(--pchem-cyan);
    background: linear-gradient(135deg, rgba(14, 34, 61, 0.9), rgba(0, 212, 255, 0.12));
    box-shadow: 0 0 0 2px var(--pchem-cyan), 0 12px 35px rgba(0, 212, 255, 0.2);
}

.pchem-course-header {
    margin-bottom: 1.25rem;
}

.pchem-course-level {
    font-size: 0.72rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--pchem-cyan);
    background: rgba(0, 212, 255, 0.1);
    padding: 0.3rem 0.65rem;
    border-radius: 999px;
    display: inline-block;
    margin-bottom: 0.75rem;
}

.pchem-course-title {
    font-size: 1.35rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1.25;
    margin-bottom: 0.5rem;
}

.pchem-course-spec {
    font-family: var(--pchem-font-mono);
    font-size: 0.78rem;
    color: var(--pchem-gold);
    margin-bottom: 1rem;
    display: block;
}

.pchem-course-desc {
    font-size: 0.9rem;
    color: var(--pchem-text-light-muted);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.pchem-course-features {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem;
}

.pchem-course-feature-item {
    font-size: 0.84rem;
    color: var(--pchem-text-light);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.pchem-course-feature-item i {
    color: var(--pchem-cyan);
    font-size: 0.75rem;
}

/* ============================================================================
   TEACHER CREDENTIALS & PROFILE SECTION (PHASE 6)
   ============================================================================ */
.pchem-teacher-card {
    background: linear-gradient(135deg, var(--pchem-navy-card), #091a32);
    border: 1px solid var(--pchem-navy-border);
    border-radius: var(--pchem-radius-xl);
    padding: 2.75rem 2.25rem;
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 2.5rem;
    align-items: center;
    box-shadow: 0 16px 45px rgba(0, 0, 0, 0.4);
}

.pchem-teacher-avatar-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.pchem-teacher-monogram {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: linear-gradient(135deg, #102a4e, #0a182c);
    border: 4px solid var(--pchem-cyan);
    box-shadow: 0 0 30px var(--pchem-cyan-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    margin-bottom: 1.25rem;
    position: relative;
}

.pchem-teacher-initials {
    font-size: 3.5rem;
    font-weight: 900;
    letter-spacing: -0.04em;
    background: linear-gradient(135deg, #ffffff, var(--pchem-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
}

.pchem-teacher-badge-pill {
    position: absolute;
    bottom: -10px;
    background: var(--pchem-gold);
    color: #000000;
    font-size: 0.65rem;
    font-weight: 800;
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.pchem-teacher-name {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    font-weight: 900;
    color: #ffffff;
    line-height: 1.15;
    margin-bottom: 0.35rem;
}

.pchem-teacher-role {
    font-size: 1rem;
    color: var(--pchem-cyan);
    font-weight: 700;
    margin-bottom: 1rem;
}

.pchem-credentials-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin-bottom: 1.5rem;
}

.pchem-credential-badge {
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.22);
    border-radius: var(--pchem-radius-sm);
    padding: 0.45rem 0.85rem;
    font-size: 0.84rem;
    font-weight: 700;
    color: #e2e8f0;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.pchem-credential-badge.is-examiner {
    background: rgba(245, 158, 11, 0.12);
    border-color: var(--pchem-gold);
    color: #fef08a;
}

.pchem-teacher-bio {
    font-size: 0.95rem;
    color: var(--pchem-text-light-muted);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

/* ============================================================================
   LEARNING APPROACH (PHASE 7)
   ============================================================================ */
.pchem-pillars-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.pchem-pillar-card {
    background: var(--pchem-navy-card);
    border: 1px solid var(--pchem-navy-border);
    border-radius: var(--pchem-radius-lg);
    padding: 2rem 1.75rem;
    transition: var(--pchem-transition);
}

.pchem-pillar-card:hover {
    border-color: var(--pchem-cyan);
    transform: translateY(-3px);
}

.pchem-pillar-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--pchem-radius-md);
    background: rgba(0, 212, 255, 0.12);
    color: var(--pchem-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 1.25rem;
}

.pchem-pillar-title {
    font-size: 1.2rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 0.65rem;
}

.pchem-pillar-desc {
    font-size: 0.9rem;
    color: var(--pchem-text-light-muted);
    line-height: 1.6;
}

/* ============================================================================
   SYLLABUS & TOPIC EXPLORER (PHASE 8)
   ============================================================================ */
.pchem-tabs-nav {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.pchem-tab-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--pchem-text-light-muted);
    padding: 0.75rem 1.4rem;
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--pchem-transition);
}

.pchem-tab-btn:hover {
    color: #ffffff;
    border-color: var(--pchem-cyan);
}

.pchem-tab-btn.is-active {
    background: var(--pchem-cyan);
    color: var(--pchem-navy-deep);
    border-color: var(--pchem-cyan);
    box-shadow: 0 4px 16px var(--pchem-cyan-glow);
}

.pchem-tab-pane {
    display: none;
}

.pchem-tab-pane.is-active {
    display: block;
    animation: pchemFadeIn 0.3s ease;
}

@keyframes pchemFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

.pchem-syllabus-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
}

.pchem-syllabus-card {
    background: var(--pchem-navy-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--pchem-radius-md);
    padding: 1.5rem;
}

.pchem-syllabus-card h4 {
    font-size: 1.05rem;
    color: #ffffff;
    font-weight: 800;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pchem-syllabus-card h4 i {
    color: var(--pchem-cyan);
}

.pchem-syllabus-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.pchem-syllabus-list li {
    font-size: 0.85rem;
    color: var(--pchem-text-light-muted);
    padding: 0.35rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pchem-syllabus-list li:last-child {
    border-bottom: none;
}

.pchem-syllabus-list li::before {
    content: "•";
    color: var(--pchem-cyan);
    font-weight: bold;
}

/* ============================================================================
   PARENT & STUDENT TRUST (PHASE 9)
   ============================================================================ */
.pchem-trust-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.pchem-trust-col {
    background: var(--pchem-navy-card);
    border: 1px solid var(--pchem-navy-border);
    border-radius: var(--pchem-radius-lg);
    padding: 2.25rem;
}

.pchem-trust-col h3 {
    font-size: 1.45rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.pchem-trust-col h3 i {
    color: var(--pchem-cyan);
}

.pchem-trust-points {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.pchem-trust-point {
    display: flex;
    gap: 1rem;
}

.pchem-trust-point-num {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(0, 212, 255, 0.15);
    color: var(--pchem-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.pchem-trust-point-text strong {
    display: block;
    font-size: 0.95rem;
    color: #ffffff;
    margin-bottom: 0.2rem;
}

.pchem-trust-point-text p {
    font-size: 0.85rem;
    color: var(--pchem-text-light-muted);
    margin: 0;
}

/* ============================================================================
   ACCESSIBLE FAQ ACCORDION (PHASE 10)
   ============================================================================ */
.pchem-faq-list {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.pchem-faq-item {
    background: var(--pchem-navy-card);
    border: 1px solid var(--pchem-navy-border);
    border-radius: var(--pchem-radius-md);
    overflow: hidden;
    transition: var(--pchem-transition);
}

.pchem-faq-item:hover {
    border-color: rgba(0, 212, 255, 0.4);
}

.pchem-faq-summary {
    padding: 1.25rem 1.5rem;
    font-size: 1.05rem;
    font-weight: 700;
    color: #ffffff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    list-style: none;
    user-select: none;
}

.pchem-faq-summary::-webkit-details-marker {
    display: none;
}

.pchem-faq-summary i {
    color: var(--pchem-cyan);
    transition: transform 0.25s ease;
}

.pchem-faq-item[open] .pchem-faq-summary i {
    transform: rotate(180deg);
}

.pchem-faq-item[open] {
    border-color: var(--pchem-cyan);
    background: var(--pchem-navy-card-hover);
}

.pchem-faq-content {
    padding: 0 1.5rem 1.25rem;
    font-size: 0.92rem;
    color: var(--pchem-text-light-muted);
    line-height: 1.7;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: 0.5rem;
    padding-top: 1rem;
}

/* ============================================================================
   ENQUIRY FORM SECTION (PHASE 12)
   ============================================================================ */
.pchem-enquiry-box {
    background: linear-gradient(135deg, #0e223d, #09172c);
    border: 1px solid var(--pchem-navy-border);
    border-radius: var(--pchem-radius-xl);
    padding: 3rem 2.5rem;
    max-width: 780px;
    margin: 0 auto;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
}

.pchem-form-group {
    margin-bottom: 1.5rem;
}

.pchem-label {
    display: block;
    font-size: 0.88rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.pchem-label .req {
    color: #f43f5e;
}

.pchem-input,
.pchem-select,
.pchem-textarea {
    width: 100%;
    min-height: 48px;
    background: rgba(5, 13, 26, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: var(--pchem-radius-md);
    color: #ffffff;
    padding: 0.75rem 1.1rem;
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--pchem-transition);
}

.pchem-input:focus,
.pchem-select:focus,
.pchem-textarea:focus {
    outline: none;
    border-color: var(--pchem-cyan);
    box-shadow: 0 0 0 3px var(--pchem-cyan-glow);
    background: rgba(5, 13, 26, 0.95);
}

.pchem-textarea {
    min-height: 110px;
    resize: vertical;
}

/* Radio pill selection */
.pchem-radio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 0.75rem;
}

.pchem-radio-label {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--pchem-radius-md);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--pchem-text-light-muted);
    transition: var(--pchem-transition);
    min-height: 48px;
    text-align: center;
}

.pchem-radio-label input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.pchem-radio-label:has(input[type="radio"]:checked) {
    background: rgba(0, 212, 255, 0.15);
    border-color: var(--pchem-cyan);
    color: #ffffff;
    box-shadow: 0 0 12px var(--pchem-cyan-glow);
}

/* Alert notifications */
.pchem-alert {
    padding: 1.25rem 1.5rem;
    border-radius: var(--pchem-radius-md);
    margin-bottom: 2rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    font-size: 0.95rem;
    line-height: 1.5;
}

.pchem-alert-success {
    background: rgba(37, 211, 102, 0.15);
    border: 1px solid var(--pchem-emerald);
    color: #d1fae5;
}

.pchem-alert-error {
    background: rgba(244, 63, 94, 0.15);
    border: 1px solid #f43f5e;
    color: #ffe4e6;
}

/* ============================================================================
   MOBILE STICKY ACTION BAR
   ============================================================================ */
.pchem-sticky-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 999;
    background: rgba(5, 13, 26, 0.96);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid var(--pchem-navy-border);
    padding: 0.65rem 1rem;
    display: none;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.4);
}

.pchem-sticky-inner {
    max-width: 600px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

/* ============================================================================
   FOOTER
   ============================================================================ */
.pchem-footer {
    border-top: 1px solid var(--pchem-navy-border);
    padding: 3.5rem 0 2rem;
    background: #030811;
    font-size: 0.88rem;
    color: var(--pchem-text-light-muted);
}

.pchem-footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 2.5rem;
    margin-bottom: 2.5rem;
}

.pchem-footer-col h5 {
    color: #ffffff;
    font-size: 0.95rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.pchem-footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.pchem-footer-links li {
    margin-bottom: 0.6rem;
}

.pchem-footer-links a {
    color: var(--pchem-text-light-muted);
    text-decoration: none;
    transition: var(--pchem-transition);
}

.pchem-footer-links a:hover {
    color: var(--pchem-cyan);
}

.pchem-footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    font-size: 0.8rem;
}

/* ============================================================================
   RESPONSIVE MEDIA QUERIES
   ============================================================================ */
@media (max-width: 991px) {
    .pchem-nav-links {
        display: none;
    }

    .pchem-exam-grid {
        grid-template-columns: 1fr;
    }

    .pchem-teacher-card {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 1.75rem;
    }

    .pchem-teacher-avatar-box {
        margin: 0 auto;
    }

    .pchem-credentials-list {
        justify-content: center;
    }

    .pchem-trust-grid {
        grid-template-columns: 1fr;
    }

    .pchem-footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .pchem-sticky-bar {
        display: block;
    }

    .pchem-wrapper {
        padding-bottom: 74px; /* Space for sticky bar */
    }

    .pchem-hero {
        padding: 2.5rem 0 3rem;
    }

    .pchem-hero-actions {
        flex-direction: column;
    }

    .pchem-hero-actions .pchem-btn {
        width: 100%;
    }

    .pchem-enquiry-box {
        padding: 2rem 1.25rem;
    }

    .pchem-footer-grid {
        grid-template-columns: 1fr;
        gap: 1.75rem;
    }

    .pchem-footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}