/* ============================================
     EXPERT REVIEWS PAGE
     Premium educational design matching
     the Ekalavya Learning Architecture theme
     (gold on deep brown).
     ============================================ */

/* --- Background --- */
.er-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(ellipse at 30% 20%, rgba(180, 120, 50, 0.12) 0%, transparent 60%),
        radial-gradient(ellipse at 70% 80%, rgba(180, 120, 50, 0.08) 0%, transparent 60%),
        var(--color-bg-primary);
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

/* --- Floating Particles --- */
.er-particles {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.er-particle {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(230, 169, 60, 0.8) 0%, rgba(230, 169, 60, 0) 70%);
    animation: floatUp linear infinite;
    opacity: 0;
}

@keyframes floatUp {
    0% {
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 0.7;
    }
    80% {
        opacity: 0.3;
    }
    100% {
        transform: translateY(-10vh) scale(1);
        opacity: 0;
    }
}

/* --- Scroll Wrapper --- */
.er-scroll-wrapper {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    min-height: 100vh;
    padding: 40px 20px;
    width: 100%;
    box-sizing: border-box;
}

/* --- Opened Scroll Experience --- */
.er-opened-scroll {
    max-width: 900px;
    width: 100%;
    position: relative;
    z-index: 2;
    margin: 0 auto;
}

/* Scroll outer parchment */
.er-scroll-outer {
    position: relative;
    background:
        linear-gradient(135deg, #8B6914 0%, #C8A050 2%, transparent 2%),
        linear-gradient(225deg, #8B6914 0%, #C8A050 2%, transparent 2%),
        linear-gradient(to bottom, #F4E4C1 0%, #E8D5A8 30%, #DCC89D 70%, #C8B080 100%);
    border-radius: 12px;
    padding: 50px 40px 40px;
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.5),
        inset 0 0 80px rgba(80, 50, 20, 0.15);
    overflow: hidden;
}

/* Parchment texture overlay */
.er-scroll-outer::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 3px,
            rgba(100, 70, 30, 0.02) 3px,
            rgba(100, 70, 30, 0.02) 6px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 4px,
            rgba(100, 70, 30, 0.015) 4px,
            rgba(100, 70, 30, 0.015) 8px
        );
    pointer-events: none;
    z-index: 0;
}

/* Top/Bottom rod decorations */
.er-scroll-rod-top,
.er-scroll-rod-bottom {
    position: absolute;
    left: -10px;
    right: -10px;
    height: 22px;
    background: linear-gradient(180deg, #E6C87A 0%, #9B7B2A 40%, #C8A050 60%, #8B6914 100%);
    border-radius: 6px;
    box-shadow:
        0 3px 10px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    z-index: 2;
}

.er-scroll-rod-top {
    top: 0;
}

.er-scroll-rod-bottom {
    bottom: 0;
}

.er-scroll-rod-cap-outer {
    position: absolute;
    top: -8px;
    width: 30px;
    height: 36px;
    background: linear-gradient(180deg, #F0D88A 0%, #A08030 60%, #705010 100%);
    border-radius: 5px;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.5);
    z-index: 3;
}

.er-scroll-rod-cap-outer.left {
    left: -6px;
}

.er-scroll-rod-cap-outer.right {
    right: -6px;
}

/* Content inside scroll */
.er-scroll-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

/* Glow effect on scroll */
.er-scroll-glow {
    position: absolute;
    top: -60px;
    left: 50%;
    transform: translateX(-50%);
    width: 400px;
    height: 120px;
    background: radial-gradient(ellipse, rgba(230, 169, 60, 0.25) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    animation: erGlowPulse 3s ease-in-out infinite;
}

@keyframes erGlowPulse {
    0%, 100% {
        opacity: 0.5;
        transform: translateX(-50%) scale(1);
    }
    50% {
        opacity: 1;
        transform: translateX(-50%) scale(1.1);
    }
}

/* --- Page Reset --- */
.er-page-body {
    background: var(--color-bg-primary);
    position: relative;
    z-index: 1;
    overflow-x: hidden;
}

.er-page-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
    PAGE TITLE
    ============================================ */
.er-title-section {
    padding: 56px 24px 10px;
    text-align: center;
}

.er-page-title {
    font-family: 'Lato', sans-serif;
    font-weight: 900;
    font-size: clamp(2.6rem, 6vw, 4rem);
    letter-spacing: 6px;
    color: #000000;
    margin: 0;
    text-shadow: 0 0 24px rgba(255, 180, 60, 0.55);
}

.er-page-subtitle {
    font-family: 'Lato', sans-serif;
    font-weight: 700;
    font-size: clamp(1.1rem, 2.4vw, 1.5rem);
    letter-spacing: 3px;
    text-transform: uppercase;
    color: #800000;
    margin: 14px 0 0;
}

.er-title-divider {
    width: 140px;
    height: 3px;
    margin: 28px auto 0;
    background: linear-gradient(90deg, transparent, var(--color-accent-primary), transparent);
    position: relative;
}

.er-title-divider::before {
    content: '◆';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--color-accent-primary);
    font-size: 12px;
    background: var(--color-bg-primary);
    padding: 0 10px;
}

/* --- INTRODUCTION --- */
.er-section-title {
    font-family: 'Lato', sans-serif;
    font-weight: 900;
    font-size: 1.5rem;
    color: #000000;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin: 0 0 24px;
}

.er-intro-section {
    padding: 40px 24px 60px;
}

.er-intro-card {
    max-width: 900px;
    margin: 0 auto;
    background: linear-gradient(180deg, rgba(255, 250, 240, 0.5) 0%, rgba(240, 225, 200, 0.3) 100%);
    border: 1px solid rgba(180, 130, 70, 0.3);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 0 0 20px rgba(230, 169, 60, 0.08);
    padding: 44px 48px;
    transition: transform 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease;
}

.er-intro-card:hover {
    transform: translateY(-3px);
    border-color: rgba(255, 220, 130, 0.7);
    box-shadow: 0 14px 44px rgba(0, 0, 0, 0.45), 0 0 30px rgba(230, 169, 60, 0.16);
}

.er-intro-body {
    font-family: 'Lato', sans-serif;
    font-size: 1.2rem;
    line-height: 1.85;
    color: #000000;
    text-align: center;
}

.er-intro-body p {
    margin: 0 0 1em;
}

.er-intro-body p:last-child {
    margin-bottom: 0;
}

/* ============================================
    REVIEWS GRID
    ============================================ */
.er-reviews-section {
    padding: 28px 24px 60px;
}

.er-reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 28px;
}

/* ============================================
    REVIEW CARD
    ============================================ */
.er-review-card {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 200, 100, 0.4);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 0 0 20px rgba(230, 169, 60, 0.08);
    overflow: hidden;
    transition: transform 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease;
    display: flex;
    flex-direction: column;
}

.er-review-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 220, 130, 0.7);
    box-shadow: 0 14px 44px rgba(0, 0, 0, 0.45), 0 0 30px rgba(230, 169, 60, 0.16);
}

/* ============================================
    COVER IMAGE
    ============================================ */
.er-review-cover-frame {
    position: relative;
    width: 100%;
    background: #1a1210;
}

.er-review-cover {
    display: block;
    width: 100%;
    height: auto;
    object-fit: contain;
    transition: transform 0.6s ease, opacity 0.4s ease;
}

.er-review-card:hover .er-review-cover {
    transform: scale(1.03);
    opacity: 0.85;
}

.er-review-placeholder {
    min-height: 160px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 32px 24px;
    text-align: center;
}

.er-review-placeholder-icon {
    font-size: 3.5rem;
    line-height: 1;
    filter: drop-shadow(0 0 14px rgba(230, 169, 60, 0.4));
    margin-bottom: 10px;
}

.er-review-placeholder-text {
    font-family: 'Lato', sans-serif;
    font-weight: 900;
    font-size: 1rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: #FFD98E;
    margin: 0 0 6px;
    text-shadow: 0 0 12px rgba(255, 180, 60, 0.5);
}

.er-review-placeholder-hint {
    font-family: 'Lato', sans-serif;
    font-size: 0.9rem;
    color: var(--color-text-secondary, #B8A898);
    line-height: 1.5;
    margin: 0;
}

/* ============================================
    MODULE BADGE
    ============================================ */
.er-review-module-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    display: inline-block;
    padding: 6px 14px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--color-accent-primary, #E6A93C), var(--color-accent-secondary, #FFB347));
    color: var(--color-bg-primary, #3B2F2F);
    font-family: 'Lato', sans-serif;
    font-weight: 900;
    font-size: 0.72rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4), 0 0 18px rgba(230, 169, 60, 0.5);
    z-index: 10;
}

/* ============================================
    REVIEW INFO
    ============================================ */
.er-review-info {
    padding: 20px 24px 24px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.er-review-title {
    font-family: 'Lato', sans-serif;
    font-weight: 800;
    font-size: 1.15rem;
    color: #FFD98E;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin: 0 0 10px;
    text-shadow: 0 0 10px rgba(255, 180, 60, 0.4);
    line-height: 1.3;
}

.er-review-summary {
    font-family: 'Lato', sans-serif;
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-primary, #F5E9D8);
    margin: 0 0 18px;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
    flex: 1;
}

/* ============================================
    KEY TAKEAWAY
    ============================================ */
.er-review-key-takeaway {
    background: linear-gradient(135deg, rgba(230, 169, 60, 0.12), rgba(255, 255, 255, 0.03));
    border: 1px solid rgba(230, 169, 60, 0.35);
    border-left: 4px solid var(--color-accent-primary, #E6A93C);
    border-radius: 12px;
    padding: 16px 20px;
    margin-bottom: 18px;
}

.er-review-key-takeaway-label {
    font-family: 'Lato', sans-serif;
    font-weight: 900;
    font-size: 0.75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-accent-primary, #E6A93C);
    margin: 0 0 6px;
    text-shadow: 0 0 8px rgba(230, 169, 60, 0.4);
}

.er-review-key-takeaway-text {
    font-family: 'Lato', sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text-primary, #F5E9D8);
    margin: 0;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

/* ============================================
    READ FULL REVIEW BUTTON
    ============================================ */
.er-read-full-review {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: fit-content;
    min-height: 44px;
    padding: 10px 22px;
    border-radius: 999px;
    color: var(--color-bg-primary, #3B2F2F);
    background: linear-gradient(135deg, var(--color-accent-primary, #E6A93C), var(--color-accent-secondary, #FFB347));
    border: 1px solid rgba(255, 255, 255, 0.35);
    font-family: 'Lato', sans-serif;
    font-weight: 800;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    text-decoration: none;
    box-shadow: 0 8px 24px rgba(230, 169, 60, 0.22);
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
    cursor: pointer;
}

.er-read-full-review:hover {
    transform: translateY(-2px);
    background: linear-gradient(135deg, var(--color-accent-secondary, #FFB347), var(--color-accent-primary, #E6A93C));
    box-shadow: 0 12px 32px rgba(230, 169, 60, 0.35);
    color: var(--color-bg-primary, #3B2F2F);
}

/* ============================================
    EXPANDABLE REVIEW SECTION
    ============================================ */
.er-review-expanded {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94), opacity 0.35s ease;
    opacity: 0;
}

.er-review-card.expanded .er-review-expanded,
.er-review-document.expanded .er-review-expanded {
    max-height: none;
    opacity: 1;
    overflow: visible;
}

.er-review-expanded-inner {
    padding: 0 24px 24px;
    border-top: 1px solid rgba(230, 169, 60, 0.15);
    margin-top: 0;
    padding-top: 20px;
}

.er-review-expanded-body {
    font-family: 'Lato', sans-serif;
    font-size: clamp(0.95rem, 1.8vw, 1.05rem);
    line-height: 1.8;
    color: var(--color-text-secondary, #B8A898);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

.er-review-expanded-body p {
    margin: 0 0 0.8em;
}

.er-review-expanded-body p:last-child {
    margin-bottom: 0;
}

/* ============================================
     ADDITIONAL IMAGES
     ============================================ */
.er-review-additional-images {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.er-review-additional-image {
    margin: 0;
    border-radius: 12px;
    border: 1px solid rgba(230, 169, 60, 0.25);
    background: rgba(0, 0, 0, 0.2);
}

.er-review-additional-image img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: contain;
    transition: transform 0.5s ease, opacity 0.4s ease;
}

.er-review-additional-image:hover img {
    transform: scale(1.03);
    opacity: 0.85;
}

.er-review-additional-caption {
    font-family: 'Lato', sans-serif;
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--color-text-secondary, #B8A898);
    text-align: center;
    padding: 10px 14px;
    margin: 0;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

/* ============================================
     EMPTY STATE
     ============================================ */
.er-empty-state {
    text-align: center;
    max-width: 520px;
    margin: 20px auto 0;
    padding: 56px 32px;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 200, 100, 0.35);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 0 0 24px rgba(230, 169, 60, 0.08);
}

.er-empty-icon {
    font-size: 3.5rem;
    line-height: 1;
    margin-bottom: 18px;
    filter: drop-shadow(0 0 16px rgba(230, 169, 60, 0.4));
}

.er-empty-title {
    font-family: 'Lato', sans-serif;
    font-weight: 900;
    font-size: 1.5rem;
    color: #FFD98E;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin: 0 0 10px;
    text-shadow: 0 0 16px rgba(255, 180, 60, 0.5);
}

.er-empty-text {
    font-family: 'Lato', sans-serif;
    font-size: 1.05rem;
    color: var(--color-text-secondary, #B8A898);
    line-height: 1.7;
    margin: 0;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

/* ============================================
    PLACEHOLDER (no page content)
    ============================================ */
.er-placeholder {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-primary);
    padding: 80px 24px;
}

.er-placeholder-inner {
    text-align: center;
    max-width: 600px;
    padding: 60px 40px;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.08);
    border: 2px solid rgba(230, 169, 60, 0.6);
    box-shadow: 0 0 40px rgba(230, 169, 60, 0.15);
}

.er-placeholder-inner h2 {
    font-family: 'Lato', sans-serif;
    font-weight: 900;
    font-size: 2.2rem;
    color: #FFD98E;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin: 0 0 16px;
    text-shadow: 0 0 20px rgba(255, 200, 80, 0.8);
}

.er-placeholder-inner p {
    font-family: 'Lato', sans-serif;
    font-size: 1.2rem;
    color: #ffffff;
    line-height: 1.7;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

/* ============================================
    SCROLL REVEAL
    ============================================ */
.er-fade-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1), transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}

.er-fade-up.er-revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered reveal for grid items */
.er-reviews-grid .er-fade-up:nth-child(1) { transition-delay: 0s; }
.er-reviews-grid .er-fade-up:nth-child(2) { transition-delay: 0.1s; }
.er-reviews-grid .er-fade-up:nth-child(3) { transition-delay: 0.2s; }
.er-reviews-grid .er-fade-up:nth-child(4) { transition-delay: 0.3s; }
.er-reviews-grid .er-fade-up:nth-child(5) { transition-delay: 0.4s; }
.er-reviews-grid .er-fade-up:nth-child(6) { transition-delay: 0.5s; }
.er-reviews-grid .er-fade-up:nth-child(n+7) { transition-delay: 0.6s; }

/* ============================================
    RESPONSIVE - LAPTOP
    ============================================ */
@media (max-width: 1200px) {
    .er-scroll-wrapper {
        padding: 40px 20px;
    }

    .er-page-inner {
        max-width: 900px;
    }

    .er-intro-card {
        padding: 40px 44px;
    }
}

/* ============================================
    RESPONSIVE - TABLET
    ============================================ */
@media (max-width: 992px) {
    .er-scroll-wrapper {
        padding: 40px 20px;
    }

    .er-scroll-outer {
        padding: 44px 32px 36px;
    }

    .er-page-inner {
        padding: 0 20px;
    }

    .er-title-section {
        padding: 48px 20px 8px;
    }

    .er-intro-section,
    .er-reviews-section {
        padding: 40px 20px 60px;
    }

    .er-intro-card {
        padding: 32px 36px;
        border-radius: 18px;
    }

    .er-review-card {
        border-radius: 18px;
    }

    .er-review-info {
        padding: 18px 22px 22px;
    }
}

/* ============================================
    RESPONSIVE - MOBILE
    ============================================ */
@media (max-width: 768px) {
    .er-scroll-wrapper {
        padding: 20px 12px;
    }

    .er-scroll-outer {
        padding: 40px 20px 28px;
    }

    .er-title-section {
        padding: 32px 16px 24px;
    }

    .er-page-inner {
        padding: 0 16px;
    }

    .er-intro-section,
    .er-reviews-section {
        padding: 32px 16px 48px;
    }

    .er-intro-card {
        padding: 28px 24px;
        border-radius: 16px;
    }

    .er-intro-body {
        font-size: 1.05rem;
    }

    .er-reviews-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .er-review-card {
        border-radius: 16px;
    }

    .er-review-info {
        padding: 18px 20px 20px;
    }

    .er-review-title {
        font-size: 1.05rem;
    }

    .er-review-summary {
        font-size: 0.95rem;
    }

    .er-review-placeholder {
        min-height: 140px;
        padding: 28px 20px;
    }

    .er-review-placeholder-icon {
        font-size: 2.8rem;
    }
}

/* ============================================
    RESPONSIVE - SMALL MOBILE
    ============================================ */
@media (max-width: 480px) {
    .er-scroll-wrapper {
        padding: 20px 12px;
    }

    .er-scroll-outer {
        padding: 28px 10px 18px;
    }

    .er-scroll-rod-top,
    .er-scroll-rod-bottom {
        height: 14px;
    }

    .er-scroll-rod-cap-outer {
        width: 22px;
        height: 28px;
        top: -6px;
    }

    .er-title-section {
        padding: 24px 12px 20px;
    }

    .er-page-inner {
        padding: 0 12px;
    }

    .er-intro-section,
    .er-reviews-section {
        padding: 24px 12px 40px;
    }

    .er-intro-card {
        padding: 24px 20px;
        border-radius: 14px;
    }

    .er-intro-body {
        font-size: 0.98rem;
    }

    .er-review-info {
        padding: 16px 18px 18px;
    }

    .er-review-title {
        font-size: 1rem;
    }

    .er-review-summary {
        font-size: 0.9rem;
    }

    .er-review-expanded-inner {
        padding: 0 18px 18px;
    }

    .er-review-placeholder {
        min-height: 120px;
        padding: 24px 18px;
    }

    .er-review-placeholder-icon {
        font-size: 2.2rem;
    }

    .er-review-placeholder-text {
        font-size: 0.9rem;
    }

    .er-placeholder-inner {
        padding: 44px 24px;
    }

    .er-placeholder-inner h2 {
        font-size: 1.8rem;
    }

    .er-empty-state {
        padding: 44px 24px;
    }

    .er-empty-icon {
        font-size: 2.8rem;
    }

    .er-empty-title {
        font-size: 1.3rem;
    }

    .er-empty-text {
        font-size: 0.95rem;
    }
}

/* ============================================
   EXPERT REVIEW DOCUMENT VIEW
   ============================================ */
.er-review-document {
    max-width: 900px;
    margin: 0 auto 56px;
    padding: 0;
}

.er-review-document-header {
    text-align: center;
    margin-bottom: 28px;
}

.er-review-module-name {
    font-family: 'Lato', sans-serif;
    font-weight: 900;
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    color: #000000;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin: 0;
    text-shadow: 0 0 20px rgba(255, 180, 60, 0.5);
}