/* ==========================================================================
   "Why SDM?" Premium Storytelling Carousel CSS
   SDM English Medium School, Ujire
   ========================================================================== */

:root {
    --sdm-navy: #0F172A;
    --sdm-navy-light: #1E293B;
    --sdm-blue: #0284C7;
    --sdm-sky: #38BDF8;
    --sdm-gold: #FACC15;
    --sdm-gold-dark: #854D0E;
    --sdm-emerald: #10B981;
    --sdm-crimson: #E11D48;
    --sdm-slate-text: #334155;
    --sdm-slate-light: #64748B;
    --sdm-card-bg: #FFFFFF;
    --sdm-glass: rgba(255, 255, 255, 0.85);
    --sdm-shadow: 0 20px 40px -15px rgba(15, 23, 42, 0.12);
    --sdm-transition-fast: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --sdm-transition-smooth: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.why-sdm-section {
    position: relative;
    width: 100%;
    padding: 5rem 1.5rem;
    background: linear-gradient(180deg, #F8FAFC 0%, #E0F2FE 100%);
    overflow: hidden;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    box-sizing: border-box;
}

/* Background Ambient Decor */
.why-sdm-bg-decor {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 1;
}

.bg-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.35;
}

.blob-1 { width: 450px; height: 450px; background: var(--sdm-sky); top: -100px; left: -100px; }
.blob-2 { width: 500px; height: 500px; background: var(--sdm-gold); bottom: -150px; right: -100px; }

.bg-dots-pattern {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(2, 132, 199, 0.15) 1.5px, transparent 1.5px);
    background-size: 32px 32px;
}

.why-sdm-container {
    position: relative;
    z-index: 2;
    max-width: 1240px;
    margin: 0 auto;
}

/* Header */
.why-sdm-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 3rem auto;
}

.why-sdm-tag {
    display: inline-block;
    background: #FEF08A;
    color: var(--sdm-gold-dark);
    font-size: 0.85rem;
    font-weight: 800;
    padding: 0.4rem 1.2rem;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.75rem;
}

.why-sdm-main-title {
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    font-weight: 900;
    color: var(--sdm-navy);
    margin: 0 0 0.5rem 0;
    line-height: 1.1;
}

.why-sdm-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: var(--sdm-slate-light);
    font-style: italic;
    margin: 0;
}

/* Two-Column Wrapper */
.why-sdm-carousel-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: center;
    min-height: 480px;
}

/* Left Column: Visual Stage */
.why-sdm-visual-col {
    position: relative;
}

.visual-card-frame {
    position: relative;
    background: var(--sdm-navy);
    border-radius: 24px;
    padding: 12px;
    box-shadow: var(--sdm-shadow);
    overflow: hidden;
}

.visual-viewport {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    border-radius: 16px;
    overflow: hidden;
}

.slide-visual {
    position: absolute;
    inset: 0;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity var(--sdm-transition-smooth), transform var(--sdm-transition-smooth);
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slide-visual.is-active {
    opacity: 1;
    transform: scale(1);
    pointer-events: auto;
}

.visual-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(8px);
    color: var(--sdm-sky);
    border: 1px solid rgba(56, 189, 248, 0.3);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.35rem 0.85rem;
    border-radius: 50px;
    z-index: 10;
}

.svg-scene-container {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scene-svg {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.fallback-photo {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

/* Vector Keyframe Animations */
.anim-sun { animation: pulseSun 4s infinite alternate ease-in-out; }
.anim-spin { transform-origin: center; animation: rotateSpin 12s linear infinite; }
.anim-spin-slow { transform-origin: center; animation: rotateSpin 25s linear infinite; }
.anim-float-group { animation: floatY 3s infinite alternate ease-in-out; }
.anim-tree-breeze { transform-origin: bottom center; animation: sway 5s infinite alternate ease-in-out; }
.anim-bubble-1 { animation: riseBubble 2.5s infinite linear; }
.anim-bubble-2 { animation: riseBubble 3.2s infinite linear 0.5s; }
.anim-bubble-3 { animation: riseBubble 2.8s infinite linear 1s; }
.anim-pulse { animation: pulseGlow 2s infinite alternate; }
.anim-heartbeat { transform-origin: center; animation: heartBeat 1.8s infinite ease-in-out; }
.anim-sunrise { animation: riseSun 6s infinite alternate ease-in-out; }

@keyframes rotateSpin { 100% { transform: rotate(360deg); } }
@keyframes floatY { 0% { transform: translateY(0); } 100% { transform: translateY(-12px); } }
@keyframes sway { 0% { transform: rotate(-3deg); } 100% { transform: rotate(3deg); } }
@keyframes pulseSun { 0% { transform: scale(1); opacity: 0.8; } 100% { transform: scale(1.15); opacity: 1; } }
@keyframes pulseGlow { 0% { opacity: 0.4; } 100% { opacity: 1; } }
@keyframes heartBeat { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.08); } }
@keyframes riseBubble { 0% { transform: translateY(80px); opacity: 0; } 50% { opacity: 1; } 100% { transform: translateY(-40px); opacity: 0; } }
@keyframes riseSun { 0% { transform: translateY(20px); } 100% { transform: translateY(-10px); } }

/* Right Column: Storytelling Panel */
.why-sdm-content-col {
    position: relative;
}

.story-panel-viewport {
    position: relative;
    min-height: 360px;
}

.slide-story {
    position: absolute;
    inset: 0;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--sdm-transition-smooth), transform var(--sdm-transition-smooth);
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.slide-story.is-active {
    position: relative;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.story-category-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--sdm-blue);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.category-number { color: var(--sdm-navy); }
.category-divider { color: var(--sdm-slate-light); }

.story-title {
    font-size: clamp(1.6rem, 2.8vw, 2.2rem);
    font-weight: 800;
    color: var(--sdm-navy);
    margin: 0 0 1rem 0;
    line-height: 1.25;
}

.story-description {
    font-size: 1.05rem;
    line-height: 1.65;
    color: var(--sdm-slate-text);
    margin: 0 0 1.5rem 0;
}

.story-points-container {
    background: var(--sdm-glass);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: 16px;
    padding: 1.25rem;
    box-shadow: 0 8px 24px -6px rgba(15, 23, 42, 0.05);
}

.points-heading {
    font-size: 0.85rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--sdm-slate-light);
    margin: 0 0 0.75rem 0;
    letter-spacing: 0.5px;
}

.story-points-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.point-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--sdm-navy);
    opacity: 0;
    transform: translateX(-10px);
    transition: opacity 0.4s ease var(--item-delay), transform 0.4s ease var(--item-delay);
}

.slide-story.is-active .point-item {
    opacity: 1;
    transform: translateX(0);
}

.point-icon {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #E0F2FE;
    color: var(--sdm-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* Navigation Controls Bar */
.why-sdm-nav-bar {
    margin-top: 3rem;
    background: var(--sdm-navy);
    border-radius: 20px;
    padding: 1.25rem 2rem;
    box-shadow: var(--sdm-shadow);
    color: #FFF;
    position: relative;
    overflow: hidden;
}

.nav-progress-track {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
}

.nav-progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--sdm-sky), var(--sdm-gold));
    transition: width 0.1s linear;
}

.nav-controls-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.slide-counter-display {
    font-size: 1.1rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.counter-num.current { color: var(--sdm-gold); font-size: 1.3rem; }
.counter-num.total { color: var(--sdm-slate-light); }

.slide-dots-indicator {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.dot-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.25);
    border: none;
    cursor: pointer;
    padding: 0;
    transition: all var(--sdm-transition-fast);
}

.dot-btn.is-active {
    background: var(--sdm-sky);
    width: 32px;
    border-radius: 12px;
}

.nav-action-buttons {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-arrow-btn, .nav-pause-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #FFF;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--sdm-transition-fast);
    font-size: 1rem;
}

.nav-arrow-btn svg { width: 20px; height: 20px; }

.nav-arrow-btn:hover, .nav-pause-btn:hover {
    background: var(--sdm-blue);
    border-color: var(--sdm-blue);
    transform: translateY(-2px);
}

/* Footer CTA Card */
.why-sdm-cta-card {
    margin-top: 3.5rem;
    background: linear-gradient(135deg, var(--sdm-navy) 0%, var(--sdm-navy-light) 100%);
    border-radius: 24px;
    padding: 2.5rem 3rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    box-shadow: var(--sdm-shadow);
    color: #FFF;
}

.cta-title {
    font-size: 1.6rem;
    font-weight: 800;
    margin: 0 0 0.5rem 0;
    color: var(--sdm-gold);
}

.cta-subtext {
    font-size: 1rem;
    color: #94A3B8;
    margin: 0;
}

.cta-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
}

.sdm-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 1.75rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all var(--sdm-transition-fast);
}

.sdm-btn-primary {
    background: var(--sdm-blue);
    color: #FFF;
}

.sdm-btn-primary:hover {
    background: var(--sdm-sky);
    color: var(--sdm-navy);
    transform: translateY(-2px);
}

.sdm-btn-outline {
    background: transparent;
    color: #FFF;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.sdm-btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #FFF;
    transform: translateY(-2px);
}

/* Responsive Styles */
@media (max-width: 992px) {
    .why-sdm-carousel-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .story-points-list {
        grid-template-columns: 1fr;
    }

    .why-sdm-cta-card {
        flex-direction: column;
        text-align: center;
        padding: 2rem;
    }

    .cta-actions {
        flex-direction: column;
        width: 100%;
    }

    .sdm-btn { width: 100%; }
}

@media (max-width: 640px) {
    .why-sdm-section { padding: 3rem 1rem; }
    .nav-controls-row { flex-wrap: wrap; justify-content: center; }
    .slide-dots-indicator { order: 3; width: 100%; justify-content: center; margin-top: 0.5rem; }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .slide-visual, .slide-story, .point-item, .anim-spin, .anim-float-group, .anim-tree-breeze, .anim-bubble-1, .anim-bubble-2, .anim-bubble-3, .anim-pulse, .anim-heartbeat, .anim-sunrise {
        animation: none !important;
        transition: opacity 0.3s ease !important;
        transform: none !important;
    }
}