/* ============================================
   EAEP PRESENTATION - PROFESSIONAL LIGHT THEME
   ============================================ */

:root {
    --bg-primary: #f8f9fc;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f0f4ff;
    --accent: #1a3a6b;
    --accent-light: #2d5ba6;
    --accent-lighter: #e8eef8;
    --accent-glow: rgba(26, 58, 107, 0.08);
    --teal: #0e8a72;
    --purple: #6e5dc6;
    --blue: #2d7dd2;
    --orange: #d97706;
    --red: #dc3545;
    --green: #198754;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #8896ab;
    --border: #e2e8f0;
    --border-accent: rgba(26, 58, 107, 0.18);
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow: 0 4px 20px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.08);
    --shadow-accent: 0 4px 20px rgba(26, 58, 107, 0.12);
    --transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
}

/* ============================================
   SUBTLE BACKGROUND
   ============================================ */
.bg-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.bg-particles .particle {
    position: absolute;
    border-radius: 50%;
    opacity: 0;
    animation: floatParticle 20s infinite ease-in-out;
}

@keyframes floatParticle {
    0%, 100% { opacity: 0; transform: translateY(0) scale(0.5); }
    25% { opacity: 0.5; }
    50% { opacity: 0.25; transform: translateY(-100px) scale(1); }
    75% { opacity: 0.4; }
}

/* ============================================
   PROGRESS BAR
   ============================================ */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-light), var(--blue));
    background-size: 200% 100%;
    z-index: 1001;
    transition: width 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    animation: shimmer 4s ease infinite;
}

@keyframes shimmer {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* ============================================
   NAVIGATION
   ============================================ */
.slide-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 30px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid var(--border);
    box-shadow: 0 -2px 12px rgba(0,0,0,0.04);
}

.nav-left { flex: 1; }

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 15px;
    color: var(--accent);
}

.nav-logo i { font-size: 18px; }

.nav-center {
    flex: 2;
    display: flex;
    justify-content: center;
}

.slide-indicators {
    display: flex;
    gap: 6px;
    align-items: center;
}

.slide-indicators .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #cbd5e0;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    padding: 0;
}

.slide-indicators .dot:hover {
    background: #a0aec0;
    transform: scale(1.2);
}

.slide-indicators .dot.active {
    background: var(--accent);
    width: 24px;
    border-radius: 4px;
}

.nav-right {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
}

.nav-btn {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: white;
    color: var(--accent);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    transition: var(--transition);
}

.nav-btn:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    box-shadow: var(--shadow-accent);
}

.slide-counter {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    min-width: 44px;
    text-align: center;
    letter-spacing: 0.5px;
}

/* ============================================
   SLIDES
   ============================================ */
.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.6s ease, visibility 0.6s ease, transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transform: translateX(50px);
    z-index: 1;
    background: transparent;
    overflow-y: auto;
    padding: 30px 5% 75px;
}

.slide.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
    z-index: 2;
}

.slide.exit-left {
    opacity: 0;
    transform: translateX(-50px);
}

.slide-content {
    width: 100%;
    max-width: 1100px;
    position: relative;
    z-index: 2;
}

/* ============================================
   SLIDE HEADERS
   ============================================ */
.slide-header {
    text-align: center;
    margin-bottom: 40px;
}

.header-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius);
    background: var(--accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    font-size: 22px;
    color: white;
    box-shadow: var(--shadow-accent);
}

.header-icon.large {
    width: 68px;
    height: 68px;
    font-size: 28px;
}

h2 {
    font-family: var(--font-heading);
    font-size: 36px;
    font-weight: 800;
    letter-spacing: -0.3px;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.gold {
    color: var(--accent);
}

.subtitle {
    font-size: 15px;
    color: var(--text-muted);
    font-weight: 400;
    letter-spacing: 0.3px;
}

/* ============================================
   TITLE SLIDE
   ============================================ */
.title-slide {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.title-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    border-radius: 50px;
    background: var(--accent-lighter);
    border: 1px solid var(--border-accent);
    color: var(--accent);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.8px;
    text-transform: uppercase;
}

.title-badge i { font-size: 14px; }

.title-main {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}

.title-accent {
    font-family: var(--font-heading);
    font-size: 80px;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
    letter-spacing: 4px;
}

.title-divider {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.title-sub {
    font-family: var(--font-body);
    font-size: 22px;
    font-weight: 300;
    color: var(--text-secondary);
    letter-spacing: 2px;
    text-transform: uppercase;
    line-height: 1.5;
}

.title-tagline {
    font-size: 16px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
}

.title-tagline i { color: var(--accent); }

.title-stats {
    display: flex;
    gap: 20px;
    margin-top: 8px;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    border-radius: var(--radius);
    background: white;
    border: 1px solid var(--border);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.stat-item:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.stat-item i {
    color: var(--accent);
    font-size: 16px;
}

.stat-item span {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

/* ============================================
   BENEFITS GRID (Slide 2)
   ============================================ */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.benefit-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 26px 20px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.benefit-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent);
    opacity: 0;
    transition: var(--transition);
}

.benefit-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-accent);
}

.benefit-card:hover::before { opacity: 1; }

.benefit-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 14px;
}

.benefit-icon.green { background: #e6f7ee; color: var(--green); }
.benefit-icon.blue { background: #e8f0fe; color: var(--blue); }
.benefit-icon.purple { background: #ede8fc; color: var(--purple); }
.benefit-icon.orange { background: #fef3e2; color: var(--orange); }
.benefit-icon.teal { background: #e6f6f2; color: var(--teal); }
.benefit-icon.red { background: #fde8ea; color: var(--red); }

.benefit-card h3 {
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.benefit-card p {
    font-size: 13px;
    line-height: 1.55;
    color: var(--text-muted);
}

/* ============================================
   AADHAAR INTEGRATION (Slide 3)
   ============================================ */
.id-integration-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.id-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.id-card-header {
    background: var(--accent);
    color: white;
    padding: 16px 22px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 15px;
}

.id-card-header i { font-size: 18px; }

.id-card-body {
    padding: 24px 22px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.id-field {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px;
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    border: 1px solid var(--border);
}

.id-field i {
    font-size: 24px;
    color: var(--accent);
    width: 36px;
    text-align: center;
}

.id-field label {
    display: block;
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 3px;
}

.id-field span {
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--text-secondary);
}

.id-features {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.id-feature-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 18px;
    border-radius: var(--radius);
    background: white;
    border: 1px solid var(--border);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.id-feature-item:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow);
    transform: translateX(4px);
}

.feature-num {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
    min-width: 36px;
    opacity: 0.3;
}

.id-feature-item h4 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 3px;
    color: var(--text-primary);
}

.id-feature-item p {
    font-size: 12.5px;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ============================================
   SYSTEM FLOW (Slide 4)
   ============================================ */
.flow-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 6px;
    padding: 10px 0;
}

.flow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 18px 14px;
    border-radius: var(--radius-lg);
    background: white;
    border: 1px solid var(--border);
    min-width: 110px;
    transition: var(--transition);
    position: relative;
    cursor: default;
    box-shadow: var(--shadow-sm);
}

.flow-step:hover {
    transform: translateY(-4px);
    border-color: var(--border-accent);
    box-shadow: var(--shadow);
}

.flow-step.highlight-step {
    border-color: var(--accent);
    background: var(--accent-lighter);
}

.flow-step.highlight-step .flow-icon {
    background: var(--accent);
    color: white;
}

.flow-icon {
    width: 46px;
    height: 46px;
    border-radius: var(--radius-sm);
    background: var(--accent-lighter);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--accent);
    transition: var(--transition);
}

.flow-step:hover .flow-icon {
    background: var(--accent);
    color: white;
    box-shadow: var(--shadow-accent);
}

.flow-label {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
}

.flow-desc {
    font-size: 10px;
    color: var(--text-muted);
}

.flow-arrow {
    color: var(--accent);
    font-size: 14px;
    opacity: 0.35;
    animation: pulseArrow 2.5s infinite;
}

.flow-arrow.arrow-down {
    width: 100%;
    text-align: center;
    font-size: 16px;
    padding: 2px 0;
}

@keyframes pulseArrow {
    0%, 100% { opacity: 0.25; transform: translateX(0); }
    50% { opacity: 0.6; transform: translateX(3px); }
}

.flow-arrow.arrow-down i {
    animation: pulseArrowDown 2.5s infinite;
}

@keyframes pulseArrowDown {
    0%, 100% { opacity: 0.25; transform: translateY(0); }
    50% { opacity: 0.6; transform: translateY(3px); }
}

/* Active flow step animation */
.flow-step.flow-active {
    border-color: var(--blue);
    background: #e8f0fe;
}

.flow-step.flow-active .flow-icon {
    background: var(--blue);
    color: white;
    animation: flowPulse 1.5s infinite;
}

@keyframes flowPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(45, 125, 210, 0.25); }
    50% { box-shadow: 0 0 0 8px rgba(45, 125, 210, 0); }
}

/* ============================================
   DOCUMENT CARDS (Slide 5)
   ============================================ */
.doc-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.doc-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 26px 18px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    box-shadow: var(--shadow-sm);
}

.doc-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-accent);
    box-shadow: var(--shadow-lg);
}

.doc-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius);
    background: var(--accent-lighter);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--accent);
    margin-bottom: 14px;
}

.doc-card h3 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.doc-card p {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.55;
    margin-bottom: 14px;
}

.doc-tag {
    display: inline-block;
    padding: 3px 12px;
    border-radius: 20px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.doc-tag.mandatory {
    background: #e8f0fe;
    color: var(--accent);
    border: 1px solid var(--border-accent);
}

.doc-tag.optional {
    background: #e6f6f2;
    color: var(--teal);
    border: 1px solid rgba(14, 138, 114, 0.2);
}

/* ============================================
   APPROVAL FLOW (Slide 6) - HORIZONTAL
   ============================================ */
.approval-flow {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr;
    align-items: center;
    gap: 0;
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
}

.approval-tier {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px 22px;
    text-align: center;
    width: 100%;
    transition: var(--transition);
    position: relative;
    box-shadow: var(--shadow-sm);
}

.approval-tier:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.approval-tier.final-tier {
    border-color: var(--accent);
    background: var(--accent-lighter);
}

.tier-number {
    position: absolute;
    top: -12px;
    left: 20px;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--accent);
    color: white;
    font-size: 12px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tier-icon {
    font-size: 26px;
    color: var(--accent);
    margin-bottom: 10px;
}

.approval-tier h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.tier-subtitle {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.tier-details {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    margin-top: 10px;
}

.tier-details span {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11.5px;
    color: var(--text-secondary);
    padding: 5px 12px;
    border-radius: 20px;
    background: var(--bg-primary);
    width: 100%;
    justify-content: center;
}

.tier-details i {
    color: var(--accent);
    font-size: 11px;
}

.approval-connector {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 8px;
    color: var(--accent);
    font-size: 16px;
    opacity: 0.4;
}

.approval-connector .connector-line {
    display: none;
}

.approval-connector i::before {
    content: "\f054";
}

/* ============================================
   ISSUANCE STEPS (Slide 7)
   ============================================ */
.issuance-steps {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
    align-items: start;
    gap: 0;
    justify-items: center;
}

.issuance-step {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px 16px;
    text-align: center;
    width: 100%;
    transition: var(--transition);
    position: relative;
    box-shadow: var(--shadow-sm);
}

.issuance-step:hover {
    transform: translateY(-4px);
    border-color: var(--border-accent);
    box-shadow: var(--shadow-lg);
}

.issuance-num {
    position: absolute;
    top: 10px;
    right: 14px;
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 800;
    color: rgba(26, 58, 107, 0.07);
    line-height: 1;
}

.issuance-icon {
    font-size: 28px;
    color: var(--accent);
    margin-bottom: 12px;
}

.issuance-step h3 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.issuance-step p {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.5;
}

.issuance-arrow {
    color: var(--accent);
    font-size: 14px;
    opacity: 0.3;
    display: flex;
    align-items: center;
    padding: 0 6px;
    padding-top: 40px;
}

/* ============================================
   ARCHITECTURE GRID (Slide 8)
   ============================================ */
.arch-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.arch-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 26px 18px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.arch-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-accent);
    box-shadow: var(--shadow-lg);
}

.arch-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: var(--accent-lighter);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: var(--accent);
    margin-bottom: 14px;
}

.arch-card h3 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.arch-card p {
    font-size: 12.5px;
    color: var(--text-muted);
    line-height: 1.55;
}

/* ============================================
   VISION SLIDE (Slide 9)
   ============================================ */
.vision-slide {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    position: relative;
}

.vision-glow {
    position: absolute;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(26, 58, 107, 0.04), transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    animation: breathe 5s ease-in-out infinite;
}

@keyframes breathe {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.4; }
    50% { transform: translate(-50%, -50%) scale(1.15); opacity: 0.8; }
}

.vision-text {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-secondary);
    max-width: 700px;
    position: relative;
}

.vision-pillars {
    display: flex;
    gap: 20px;
    margin-top: 8px;
}

.pillar {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px 28px;
    border-radius: var(--radius-lg);
    background: white;
    border: 1px solid var(--border);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.pillar:hover {
    border-color: var(--border-accent);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.pillar i {
    font-size: 24px;
    color: var(--accent);
}

.pillar span {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}

.vision-footer {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 13px;
    margin-top: 16px;
}

.vision-footer i {
    color: var(--accent);
    font-size: 18px;
}

/* ============================================
   ANIMATIONS
   ============================================ */
.animate-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.55s ease, transform 0.55s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.animate-in.delay-1 { transition-delay: 0.12s; }
.animate-in.delay-2 { transition-delay: 0.24s; }
.animate-in.delay-3 { transition-delay: 0.36s; }

.slide.active .animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   KEYBOARD HINT
   ============================================ */
.keyboard-hint {
    position: fixed;
    bottom: 68px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 18px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 11px;
    color: var(--text-muted);
    z-index: 999;
    opacity: 1;
    transition: opacity 1s ease;
    box-shadow: var(--shadow-sm);
}

.keyboard-hint.hidden {
    opacity: 0;
    pointer-events: none;
}

kbd {
    display: inline-block;
    padding: 1px 6px;
    border-radius: 3px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    font-family: var(--font-body);
    font-size: 11px;
    margin: 0 1px;
    color: var(--text-secondary);
}

/* ============================================
   RESPONSIVE — LARGE TABLETS / SMALL LAPTOPS
   ============================================ */
@media (max-width: 1100px) {
    .benefits-grid { grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .doc-grid { grid-template-columns: repeat(2, 1fr); }
    .arch-grid { grid-template-columns: repeat(3, 1fr); gap: 14px; }
    h2 { font-size: 32px; }
    .title-accent { font-size: 64px; }
    .slide-header { margin-bottom: 30px; }

    /* Approval - stay horizontal but tighter */
    .approval-flow { gap: 0; max-width: 100%; }
    .approval-tier { padding: 20px 14px; }
    .approval-tier h3 { font-size: 14px; }
    .tier-details span { font-size: 10.5px; padding: 4px 8px; }
    .tier-icon { font-size: 22px; }

    /* Issuance - stay horizontal but tighter */
    .issuance-step { padding: 20px 12px; }
    .issuance-step h3 { font-size: 13px; }
    .issuance-icon { font-size: 24px; }
}

/* ============================================
   RESPONSIVE — TABLETS
   ============================================ */
@media (max-width: 900px) {
    .slide { padding: 24px 4% 75px; }
    .benefits-grid { grid-template-columns: repeat(2, 1fr); }
    .arch-grid { grid-template-columns: repeat(2, 1fr); }
    .id-integration-layout { grid-template-columns: 1fr; gap: 24px; }

    /* Approval - stack vertical */
    .approval-flow {
        grid-template-columns: 1fr;
        gap: 0;
        max-width: 420px;
    }
    .approval-connector {
        padding: 6px 0;
        transform: rotate(90deg);
    }

    /* Issuance - 2 per row grid */
    .issuance-steps {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }
    .issuance-arrow { display: none; }
}

/* ============================================
   RESPONSIVE — PHONES
   ============================================ */
@media (max-width: 640px) {
    .slide { padding: 20px 4% 72px; }
    h2 { font-size: 26px; }
    .subtitle { font-size: 13px; }
    .slide-header { margin-bottom: 24px; }
    .header-icon { width: 44px; height: 44px; font-size: 18px; margin-bottom: 12px; }

    .title-accent { font-size: 48px; letter-spacing: 2px; }
    .title-sub { font-size: 16px; letter-spacing: 1px; }
    .title-tagline { font-size: 13px; }
    .title-badge { font-size: 11px; padding: 6px 14px; }
    .title-stats { flex-direction: column; gap: 8px; align-items: center; }
    .stat-item { padding: 10px 16px; }
    .stat-item span { font-size: 12px; }

    .benefits-grid { grid-template-columns: 1fr; gap: 10px; }
    .benefit-card { padding: 20px 16px; }

    .id-feature-item { padding: 14px; gap: 12px; }
    .feature-num { font-size: 20px; min-width: 30px; }

    .flow-container { gap: 4px; }
    .flow-step { min-width: 85px; padding: 14px 10px; }
    .flow-icon { width: 38px; height: 38px; font-size: 16px; }
    .flow-label { font-size: 10px; }
    .flow-desc { font-size: 9px; }
    .flow-arrow:not(.arrow-down) { display: none; }

    .doc-grid { grid-template-columns: 1fr; gap: 10px; }
    .doc-card { padding: 20px 16px; }

    .approval-flow { max-width: 100%; }
    .approval-tier { padding: 22px 16px; }

    .issuance-steps { grid-template-columns: 1fr; gap: 10px; }

    .arch-grid { grid-template-columns: 1fr; gap: 10px; }

    .vision-text { font-size: 15px; }
    .vision-pillars { flex-wrap: wrap; justify-content: center; gap: 10px; }
    .pillar { padding: 14px 20px; }
    .pillar i { font-size: 20px; }
    .pillar span { font-size: 12px; }

    .slide-nav { padding: 8px 12px; }
    .nav-logo span { display: none; }
    .nav-btn { width: 32px; height: 32px; font-size: 12px; }
    .slide-counter { font-size: 11px; }
    .slide-indicators .dot { width: 6px; height: 6px; }
    .slide-indicators .dot.active { width: 18px; }
}

/* ============================================
   DARK MODE
   ============================================ */
[data-theme="dark"] {
    --bg-primary: #0f1219;
    --bg-secondary: #1a1f2e;
    --bg-card: #1a1f2e;
    --bg-card-hover: #242a3a;
    --accent: #6b9eff;
    --accent-light: #4a7eff;
    --accent-lighter: rgba(107, 158, 255, 0.1);
    --accent-glow: rgba(107, 158, 255, 0.08);
    --text-primary: #e8ecf4;
    --text-secondary: #a0aec0;
    --text-muted: #636e80;
    --border: #2a3040;
    --border-accent: rgba(107, 158, 255, 0.2);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.2), 0 1px 2px rgba(0,0,0,0.15);
    --shadow: 0 4px 20px rgba(0,0,0,0.2);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.25);
    --shadow-accent: 0 4px 20px rgba(107, 158, 255, 0.1);
}

[data-theme="dark"] .slide-nav {
    background: rgba(15, 18, 25, 0.92);
}

[data-theme="dark"] .nav-btn {
    background: var(--bg-card);
    color: var(--accent);
}

[data-theme="dark"] .nav-btn:hover {
    background: var(--accent);
    color: var(--bg-primary);
}

[data-theme="dark"] .id-card-header {
    background: var(--accent);
    color: var(--bg-primary);
}

[data-theme="dark"] .header-icon {
    background: var(--accent);
    color: var(--bg-primary);
}

[data-theme="dark"] .title-accent {
    color: var(--accent);
}

[data-theme="dark"] .keyboard-hint {
    background: var(--bg-card);
}

[data-theme="dark"] .progress-bar {
    background: linear-gradient(90deg, var(--accent), var(--accent-light), #9f7aea);
    background-size: 200% 100%;
}

[data-theme="dark"] .benefit-icon.green { background: rgba(25, 135, 84, 0.15); }
[data-theme="dark"] .benefit-icon.blue { background: rgba(45, 125, 210, 0.15); }
[data-theme="dark"] .benefit-icon.purple { background: rgba(110, 93, 198, 0.15); }
[data-theme="dark"] .benefit-icon.orange { background: rgba(217, 119, 6, 0.15); }
[data-theme="dark"] .benefit-icon.teal { background: rgba(14, 138, 114, 0.15); }
[data-theme="dark"] .benefit-icon.red { background: rgba(220, 53, 69, 0.15); }

[data-theme="dark"] .arch-icon {
    background: rgba(107, 158, 255, 0.12);
    color: var(--accent);
}

[data-theme="dark"] .doc-icon {
    background: rgba(107, 158, 255, 0.12);
    color: var(--accent);
}

[data-theme="dark"] .doc-tag.mandatory {
    background: rgba(107, 158, 255, 0.12);
    color: var(--accent);
    border-color: rgba(107, 158, 255, 0.2);
}

[data-theme="dark"] .tier-number {
    background: var(--accent);
    color: var(--bg-primary);
}

/* Theme toggle button */
.theme-toggle {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transition: var(--transition);
    margin-right: 6px;
}

.theme-toggle:hover {
    border-color: var(--border-accent);
    color: var(--accent);
    box-shadow: var(--shadow-sm);
}