/* ==========================================================================
   DESIGN SYSTEM & CSS VARIABLES
   ========================================================================== */
:root {
    /* Color Tokens (HSL) */
    --primary-hsl: 224, 76%, 48%;
    --primary: hsl(var(--primary-hsl));
    --primary-light: hsl(214, 100%, 96%);
    --primary-dark: hsl(224, 76%, 36%);
    
    --accent-hsl: 142, 70%, 45%;
    --accent: hsl(var(--accent-hsl));
    --accent-light: hsl(138, 76%, 97%);
    --accent-dark: hsl(142, 70%, 35%);

    --warning-hsl: 38, 92%, 50%;
    --warning: hsl(var(--warning-hsl));
    --warning-light: hsl(40, 100%, 96%);

    --danger-hsl: 0, 84%, 60%;
    --danger: hsl(var(--danger-hsl));
    --danger-light: hsl(0, 100%, 97%);

    --purple-hsl: 262, 83%, 58%;
    --purple: hsl(var(--purple-hsl));
    --purple-light: hsl(263, 100%, 97%);

    --teal-hsl: 173, 80%, 40%;
    --teal: hsl(var(--teal-hsl));
    --teal-light: hsl(172, 66%, 95%);

    /* Neutrals */
    --slate-50: hsl(210, 40%, 98%);
    --slate-100: hsl(210, 40%, 96%);
    --slate-200: hsl(214, 32%, 91%);
    --slate-300: hsl(212, 27%, 84%);
    --slate-400: hsl(215, 20%, 65%);
    --slate-600: hsl(215, 16%, 47%);
    --slate-700: hsl(217, 19%, 27%);
    --slate-800: hsl(215, 28%, 17%);
    --slate-900: hsl(222, 47%, 11%);
    --white: #ffffff;

    /* Semantic Elements */
    --body-bg: var(--slate-50);
    --card-bg: var(--white);
    --text-main: var(--slate-800);
    --text-muted: var(--slate-600);
    --border-color: var(--slate-200);

    /* Layout & Shadows */
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05), 0 1px 2px rgba(15, 23, 42, 0.03);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.06), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 32px;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   RESET & BASICS
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--body-bg);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    color: var(--slate-900);
    font-weight: 700;
    line-height: 1.25;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

button, input, select {
    font-family: inherit;
}

/* ==========================================================================
   TYPOGRAPHY UTILITIES
   ========================================================================== */
.font-mono { font-family: monospace; }
.font-bold { font-weight: 700; }
.text-center { text-align: center; }
.flex-row-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.shadow { box-shadow: var(--shadow-md); }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* ==========================================================================
   LAYOUT CONTAINERS
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1240px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 24px;
    padding-right: 24px;
}

/* ==========================================================================
   SITE HEADER & NAVIGATION
   ========================================================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    transition: var(--transition);
}

.site-header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
    padding: 12px 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    max-width: 1240px;
    margin: 0 auto;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--slate-900);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    box-shadow: 0 4px 10px rgba(37, 99, 235, 0.25);
}

.logo-link .highlight {
    color: var(--primary);
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-item {
    font-weight: 500;
    color: var(--slate-600);
    position: relative;
    padding: 6px 0;
}

.nav-item:hover, .nav-item.active {
    color: var(--primary);
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition);
}

.nav-item:hover::after {
    width: 100%;
}

.nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: var(--primary);
    color: var(--white);
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    box-shadow: 0 4px 6px rgba(37, 99, 235, 0.15);
}

.nav-btn:hover {
    background-color: var(--primary-dark);
    box-shadow: 0 6px 12px rgba(37, 99, 235, 0.25);
    transform: translateY(-2px);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1100;
}

.mobile-menu-toggle .bar {
    width: 100%;
    height: 2.5px;
    background-color: var(--slate-900);
    border-radius: 4px;
    transition: var(--transition);
}

/* ==========================================================================
   BUTTONS SYSTEM
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    box-shadow: 0 8px 16px rgba(37, 99, 235, 0.2);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background-color: var(--slate-100);
    color: var(--slate-800);
    border: 1px solid var(--slate-200);
}

.btn-secondary:hover {
    background-color: var(--slate-200);
    color: var(--slate-900);
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 36px;
    border-radius: var(--radius-lg);
}

.btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1.2;
}

.btn-label {
    font-size: 1.05rem;
    font-weight: 700;
}

.btn-meta {
    font-size: 0.75rem;
    opacity: 0.85;
    font-weight: 500;
    margin-top: 2px;
}

.btn-label-large {
    font-size: 1.15rem;
    font-weight: 800;
}

.btn-subtext {
    font-size: 0.8rem;
    opacity: 0.85;
    margin-top: 2px;
}

/* Pulse animation for Android button in Hero */
#mainHeroCTA {
    animation: pulseGlow 2.5s infinite;
}

@keyframes pulseGlow {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.4);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(37, 99, 235, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 99, 235, 0);
    }
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
    padding: 160px 0 80px;
    background: radial-gradient(circle at 10% 20%, rgba(214, 230, 255, 0.4) 0%, rgba(255, 255, 255, 0) 60%),
                radial-gradient(circle at 90% 80%, rgba(209, 250, 229, 0.3) 0%, rgba(255, 255, 255, 0) 60%);
    position: relative;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.safety-badge-container {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.safety-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: var(--accent-light);
    color: var(--accent-dark);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid rgba(16, 185, 129, 0.15);
}

.shield-icon {
    animation: shieldWobble 4s infinite alternate;
}

@keyframes shieldWobble {
    0%, 100% { transform: rotate(0deg); }
    80%, 90% { transform: rotate(5deg); }
    85%, 95% { transform: rotate(-5deg); }
}

.version-pill {
    background-color: var(--primary-light);
    color: var(--primary);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid rgba(37, 99, 235, 0.15);
}

.hero-title {
    font-size: 3.5rem;
    letter-spacing: -1px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--slate-900) 40%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--slate-600);
    margin-bottom: 36px;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--slate-900);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--slate-600);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background-color: var(--slate-200);
}

/* ==========================================================================
   INTERACTIVE PHONE MOCKUP
   ========================================================================== */
.hero-mockup-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-device {
    width: 290px;
    height: 590px;
    background-color: var(--slate-900);
    border-radius: 44px;
    border: 11px solid #1E293B;
    box-shadow: 0 25px 60px -15px rgba(15, 23, 42, 0.35);
    position: relative;
    padding: 10px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    outline: 2px solid #475569;
    z-index: 10;
}

.phone-speaker {
    width: 60px;
    height: 4px;
    background-color: #334155;
    border-radius: 20px;
    position: absolute;
    top: 5px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 20;
}

.phone-camera {
    width: 10px;
    height: 10px;
    background-color: #334155;
    border-radius: 50%;
    position: absolute;
    top: 14px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 20;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background-color: var(--slate-50);
    border-radius: 34px;
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
    user-select: none;
}

.phone-slider-track {
    display: flex;
    width: 300%; /* Three screens inside */
    height: calc(100% - 24px); /* Leaving space for bottom dots */
    transition: transform 0.6s cubic-bezier(0.65, 0, 0.35, 1);
}

.phone-slide {
    width: 33.333%;
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* MOCK SCREEN - STATUS BAR */
.app-status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px 6px;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--slate-900);
}

.app-status-bar .icons {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* MOCK SCREEN - APP HEADER */
.app-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px 14px;
}

.user-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: var(--slate-200);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--slate-600);
}

.user-info {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.user-info .salutation {
    font-size: 0.6rem;
    color: var(--slate-400);
}

.user-info .username {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--slate-900);
}

.notif-badge {
    position: relative;
    border: none;
    background: none;
    color: var(--slate-600);
    cursor: pointer;
}

.notif-badge .dot {
    width: 6px;
    height: 6px;
    background-color: var(--danger);
    border-radius: 50%;
    position: absolute;
    top: 0;
    right: 2px;
}

.inner-header {
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--slate-200);
}

.back-btn-mock {
    background: none;
    border: none;
    color: var(--slate-700);
    cursor: pointer;
}

.header-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--slate-900);
}

/* MOCK SCREEN - BODY */
.screen-body {
    padding: 0 16px 16px;
    flex-grow: 1;
    overflow-y: auto;
    scrollbar-width: none; /* Hide scrollbar for layout */
}
.screen-body::-webkit-scrollbar { display: none; }

.card-summary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius-md);
    padding: 14px;
    color: var(--white);
    box-shadow: 0 8px 16px rgba(37, 99, 235, 0.15);
    margin-bottom: 14px;
}

.card-summary .card-title {
    font-size: 0.65rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.card-summary .metric-row {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
}

.card-summary .metric {
    display: flex;
    flex-direction: column;
}

.card-summary .metric .val {
    font-size: 1.2rem;
    font-weight: 800;
}

.card-summary .metric .lbl {
    font-size: 0.6rem;
    opacity: 0.8;
}

.widget-title {
    font-size: 0.75rem;
    font-weight: 800;
    margin-bottom: 10px;
    color: var(--slate-900);
}

.quick-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-bottom: 16px;
}

.q-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.q-icon {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.q-btn span {
    font-size: 0.55rem;
    font-weight: 600;
    color: var(--slate-700);
}

.mini-alert {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: var(--white);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    border: 1px solid var(--slate-200);
}

.mini-alert .indicator {
    width: 4px;
    height: 24px;
    background-color: var(--primary);
    border-radius: 10px;
}

.mini-alert .alert-txt {
    display: flex;
    flex-direction: column;
}

.mini-alert .alert-txt strong {
    font-size: 0.65rem;
    color: var(--slate-900);
}

.mini-alert .alert-txt span {
    font-size: 0.55rem;
    color: var(--slate-600);
}

/* SCREEN 2 SPECIFICS - ATTENDANCE */
.selector-bar {
    display: flex;
    gap: 6px;
    margin-bottom: 12px;
}

.select-chip {
    padding: 6px 12px;
    background-color: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: 50px;
    font-size: 0.6rem;
    font-weight: 600;
    color: var(--slate-600);
}

.select-chip.active {
    background-color: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.student-list-mock {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 14px;
}

.student-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--white);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--slate-200);
}

.student-row .stud-info {
    display: flex;
    align-items: center;
    gap: 6px;
}

.student-row .roll {
    font-size: 0.6rem;
    color: var(--slate-400);
    font-weight: 600;
}

.student-row .stud-name {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--slate-800);
}

.attendance-options {
    display: flex;
    gap: 4px;
}

.att-opt {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 1px solid var(--slate-300);
    background: none;
    font-size: 0.6rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--slate-600);
}

.att-opt.present.active {
    background-color: var(--accent);
    color: var(--white);
    border-color: var(--accent);
}

.att-opt.absent.active {
    background-color: var(--danger);
    color: var(--white);
    border-color: var(--danger);
}

.btn-submit-mock {
    width: 100%;
    padding: 10px;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--white);
    font-size: 0.7rem;
    font-weight: 700;
    cursor: pointer;
}

/* SCREEN 3 SPECIFICS - FEES */
.fee-card {
    background: linear-gradient(135deg, var(--warning), #E67E22);
    border-radius: var(--radius-md);
    padding: 14px;
    color: var(--white);
    margin-bottom: 16px;
}

.fee-card .f-lbl {
    font-size: 0.65rem;
    opacity: 0.8;
}

.fee-card .f-val {
    font-size: 1.4rem;
    font-weight: 800;
    display: block;
    margin: 4px 0 8px;
}

.fee-card .f-progress {
    width: 100%;
    height: 5px;
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    overflow: hidden;
}

.fee-card .f-progress-bar {
    height: 100%;
    background-color: var(--white);
}

.fee-card .f-desc {
    font-size: 0.55rem;
    opacity: 0.8;
    margin-top: 6px;
}

.tx-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.tx-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--white);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--slate-200);
}

.tx-details {
    display: flex;
    flex-direction: column;
}

.tx-details strong {
    font-size: 0.65rem;
    color: var(--slate-800);
}

.tx-details span {
    font-size: 0.55rem;
    color: var(--slate-600);
}

.tx-amt {
    font-size: 0.7rem;
    font-weight: 700;
}

.tx-amt.success { color: var(--accent); }
.tx-amt.pending { color: var(--warning); }

/* PHONE SLIDER INTERFACE DOTS */
.phone-dots {
    display: flex;
    justify-content: center;
    gap: 6px;
    padding: 8px 0;
    background-color: var(--slate-50);
}

.phone-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--slate-300);
    cursor: pointer;
    transition: var(--transition);
}

.phone-dot.active {
    background-color: var(--primary);
    width: 14px;
    border-radius: 10px;
}

.phone-home-button {
    width: 60px;
    height: 4px;
    background-color: #334155;
    border-radius: 20px;
    align-self: center;
    margin-top: 6px;
}

/* FLOATING MOCK TAGS SURROUNDING DEVISE */
.floating-mock-tag {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-radius: 50px;
    padding: 10px 16px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--slate-800);
    white-space: nowrap;
    pointer-events: none;
}

.badge-icon {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--slate-50);
}

.tag-top-left {
    top: 70px;
    left: -70px;
    animation: floatAnim 6s infinite ease-in-out;
}

.tag-bottom-right {
    bottom: 90px;
    right: -80px;
    animation: floatAnim 6s infinite ease-in-out 3s;
}

@keyframes floatAnim {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ==========================================================================
   WAVE DIVIDER
   ========================================================================== */
.wave-divider {
    width: 100%;
    height: 60px;
    color: var(--white);
    overflow: hidden;
}

.wave-divider svg {
    display: block;
    width: 100%;
    height: 100%;
}

/* ==========================================================================
   SECTION STANDARD STYLINGS
   ========================================================================== */
.section-header {
    text-align: center;
    max-width: 650px;
    margin: 0 auto 60px;
}

.section-tagline {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--primary);
    display: inline-block;
    margin-bottom: 12px;
}

.section-title {
    font-size: 2.5rem;
    color: var(--slate-900);
    margin-bottom: 16px;
}

.section-description {
    font-size: 1.05rem;
    color: var(--slate-600);
}

/* ==========================================================================
   FEATURES SECTION
   ========================================================================== */
.features-section {
    padding: 80px 0;
    background-color: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background-color: var(--white);
    border: 1px solid var(--slate-100);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(37, 99, 235, 0.1);
}

.feature-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.bg-primary-light { background-color: var(--primary-light); }
.bg-accent-light { background-color: var(--accent-light); }
.bg-warning-light { background-color: var(--warning-light); }
.bg-purple-light { background-color: var(--purple-light); }
.bg-danger-light { background-color: var(--danger-light); }
.bg-teal-light { background-color: var(--teal-light); }

.feature-card-title {
    font-size: 1.25rem;
    margin-bottom: 14px;
}

.feature-card-text {
    font-size: 0.95rem;
    color: var(--slate-600);
    line-height: 1.6;
}

/* ==========================================================================
   ABOUT APP SECTION
   ========================================================================== */
.about-section {
    padding: 100px 0;
    background-color: var(--slate-50);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-visuals {
    display: flex;
    justify-content: center;
    align-items: center;
}

.visual-stack {
    position: relative;
    width: 320px;
    height: 320px;
}

.backdrop-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 280px;
    height: 280px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.15) 0%, transparent 70%);
    z-index: 1;
}

.mock-device-container {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 100%;
}

.about-svg-art {
    filter: drop-shadow(0 20px 30px rgba(15, 23, 42, 0.1));
}

.mock-card-anim {
    animation: mockFloat 4s infinite alternate ease-in-out;
}

@keyframes mockFloat {
    0% { transform: translateY(0); }
    100% { transform: translateY(-8px); }
}

.about-info .about-title {
    font-size: 2.2rem;
    margin-bottom: 20px;
}

.about-info .about-text {
    color: var(--slate-600);
    font-size: 1.05rem;
    margin-bottom: 36px;
}

/* AUDIENCE ACCORDIONS */
.audience-accordion {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.audience-item {
    background-color: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-md);
    padding: 16px;
    cursor: pointer;
    transition: var(--transition);
}

.audience-item:hover {
    border-color: var(--slate-300);
}

.audience-item.active {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.audience-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.aud-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.bg-primary { background-color: var(--primary); }
.bg-accent { background-color: var(--accent); }
.bg-warning { background-color: var(--warning); }

.audience-header h4 {
    font-size: 1rem;
    color: var(--slate-900);
}

.audience-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.audience-content p {
    font-size: 0.9rem;
    color: var(--slate-600);
    padding-top: 8px;
    line-height: 1.6;
}

.audience-item.active .audience-content {
    max-height: 200px;
}

/* ==========================================================================
   DOWNLOAD CENTER (CONVERSION AREA)
   ========================================================================== */
.download-section {
    padding: 100px 0;
    background-color: var(--white);
}

.download-panel {
    background: radial-gradient(circle at top right, rgba(209, 250, 229, 0.2) 0%, transparent 50%),
                radial-gradient(circle at bottom left, rgba(219, 234, 254, 0.25) 0%, transparent 50%),
                var(--white);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-xl);
    padding: 56px;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.trust-badge-horizontal {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: var(--accent-light);
    color: var(--accent-dark);
    font-size: 0.8rem;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 50px;
    margin-bottom: 24px;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.shield-green {
    color: var(--accent);
}

.download-left .panel-title {
    font-size: 2.2rem;
    margin-bottom: 14px;
}

.download-left .panel-desc {
    color: var(--slate-600);
    font-size: 1rem;
    margin-bottom: 30px;
}

.spec-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 36px;
    background-color: var(--slate-50);
    padding: 20px 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--slate-200);
}

.spec-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    border-bottom: 1px dashed var(--slate-200);
    padding-bottom: 8px;
}

.spec-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.spec-key {
    color: var(--slate-600);
    font-weight: 500;
}

.spec-val {
    color: var(--slate-900);
    font-weight: 600;
}

.truncate-hash {
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.download-buttons-group {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.btn-large {
    padding: 16px 36px;
}

.btn-dl-icon {
    animation: dlBounce 2s infinite ease-in-out;
}

@keyframes dlBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(3px); }
}

.backup-mirrors {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 0.85rem;
}

.mirror-label {
    color: var(--slate-600);
    font-weight: 500;
}

.mirror-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--slate-700);
    font-weight: 600;
    background-color: var(--slate-100);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--slate-200);
}

.mirror-link:hover {
    background-color: var(--slate-200);
    color: var(--primary);
}

/* DYNAMIC QR CARD RIGHT */
.download-right {
    background-color: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
    padding: 36px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.qr-title {
    font-size: 1.15rem;
    margin-bottom: 8px;
}

.qr-desc {
    font-size: 0.8rem;
    color: var(--slate-600);
    margin-bottom: 24px;
    max-width: 220px;
    line-height: 1.5;
}

.qr-code-box {
    width: 170px;
    height: 170px;
    border-radius: var(--radius-md);
    border: 1px solid var(--slate-200);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--white);
    box-shadow: inset 0 2px 4px rgba(15, 23, 42, 0.02);
    position: relative;
    padding: 10px;
    overflow: hidden;
}

.qr-graphic {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Laserscan beam animation */
.qr-code-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    box-shadow: 0 0 8px var(--accent);
    z-index: 5;
    animation: scannerBeam 2.5s infinite ease-in-out;
}

@keyframes scannerBeam {
    0%, 100% { top: 0; opacity: 0; }
    5%, 95% { opacity: 1; }
    50% { top: 100%; }
}

.qr-loading-spinner {
    position: absolute;
    width: 32px;
    height: 32px;
    border: 3px solid var(--slate-200);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s infinite linear;
    display: none;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.qr-scan-footer {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 24px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--slate-600);
}

.camera-icon {
    color: var(--primary);
}

/* ==========================================================================
   INSTALLATION GUIDE SECTION
   ========================================================================== */
.installation-section {
    padding: 100px 0;
    background-color: var(--slate-50);
}

.timeline-steps {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 45px;
}

.timeline-steps::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 17px;
    width: 2px;
    height: calc(100% - 30px);
    background-color: var(--slate-200);
}

.timeline-step {
    position: relative;
    margin-bottom: 50px;
}

.timeline-step:last-child {
    margin-bottom: 0;
}

.step-num-container {
    position: absolute;
    left: -45px;
    top: 0;
    z-index: 5;
}

.step-number {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--white);
    border: 2px solid var(--slate-300);
    color: var(--slate-700);
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.timeline-step:hover .step-number {
    border-color: var(--primary);
    background-color: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 10px rgba(37, 99, 235, 0.25);
}

.step-content {
    background-color: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
}

.step-title {
    font-size: 1.35rem;
    margin-bottom: 12px;
}

.step-text {
    color: var(--slate-600);
    font-size: 0.95rem;
}

.text-link {
    color: var(--primary);
    font-weight: 600;
    border-bottom: 1.5px solid rgba(37, 99, 235, 0.2);
}

.text-link:hover {
    border-color: var(--primary);
}

.navigation-trail {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: var(--slate-50);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--slate-200);
    margin: 14px 0;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--slate-800);
    flex-wrap: wrap;
}

.navigation-trail .arrow {
    font-size: 0.7rem;
    opacity: 0.8;
}

.mt-small { margin-top: 8px; }

/* VISUAL MOCK ANDROID TOGGLE */
.android-toggle-illustration {
    background-color: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-md);
    max-width: 320px;
    margin-top: 20px;
    overflow: hidden;
}

.illustration-header {
    background-color: var(--slate-50);
    padding: 10px 16px;
    border-bottom: 1px solid var(--slate-200);
    display: flex;
    align-items: center;
    gap: 6px;
    position: relative;
}

.dot-btn {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.dot-btn.red { background-color: #EF4444; }
.dot-btn.yellow { background-color: #F59E0B; }
.dot-btn.green { background-color: #10B981; }

.illustration-header .title {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--slate-600);
    margin-left: 8px;
}

.illustration-body {
    padding: 16px;
}

.browser-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.app-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.browser-info {
    display: flex;
    flex-direction: column;
}

.browser-info strong {
    font-size: 0.8rem;
    color: var(--slate-800);
}

.browser-info span {
    font-size: 0.65rem;
    color: var(--slate-400);
}

.toggle-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-top: 1px solid var(--slate-100);
    border-bottom: 1px solid var(--slate-100);
    margin-bottom: 12px;
}

.toggle-row span {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--slate-800);
}

.mock-toggle {
    width: 38px;
    height: 22px;
    background-color: var(--slate-300);
    border-radius: 20px;
    position: relative;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.toggle-knob {
    width: 16px;
    height: 16px;
    background-color: var(--white);
    border-radius: 50%;
    position: absolute;
    top: 3px;
    left: 3px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.mock-toggle.active {
    background-color: var(--accent);
}

.mock-toggle.active .toggle-knob {
    left: 19px;
}

.illustration-fineprint {
    font-size: 0.65rem;
    color: var(--slate-400);
    line-height: 1.4;
}

/* ==========================================================================
   FAQ SECTION
   ========================================================================== */
.faq-section {
    padding: 100px 0;
    background-color: var(--white);
}

.faq-accordion-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-card {
    background-color: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}

.faq-card:hover {
    border-color: var(--slate-300);
}

.faq-card.active {
    border-color: var(--primary);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    text-align: left;
}

.faq-question span {
    font-family: 'Outfit', sans-serif;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--slate-900);
    transition: var(--transition);
}

.faq-card.active .faq-question span {
    color: var(--primary);
}

.faq-arrow-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--slate-400);
    transition: var(--transition);
}

.faq-card.active .faq-arrow-icon {
    transform: rotate(180deg);
    color: var(--primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-answer p {
    font-size: 0.95rem;
    color: var(--slate-600);
    padding: 0 24px 20px;
    line-height: 1.6;
}

.faq-card.active .faq-answer {
    max-height: 200px;
}

/* ==========================================================================
   FOOTER SECTION
   ========================================================================== */
.site-footer {
    background-color: var(--slate-900);
    color: var(--slate-300);
    padding: 80px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 1fr;
    gap: 60px;
    padding-bottom: 50px;
}

.footer-info-brand .logo-link {
    color: var(--white);
    margin-bottom: 20px;
}

.footer-info-brand .logo-link .highlight {
    background: linear-gradient(135deg, var(--white) 0%, var(--slate-300) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-bio {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--slate-400);
}

.footer-title {
    color: var(--white);
    font-size: 1.05rem;
    margin-bottom: 24px;
    font-weight: 600;
}

.footer-links-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.f-link {
    color: var(--slate-400);
    font-size: 0.9rem;
    font-weight: 500;
}

.f-link:hover {
    color: var(--white);
    transform: translateX(4px);
}

.footer-contact-group .contact-desc {
    font-size: 0.9rem;
    color: var(--slate-400);
    margin-bottom: 20px;
    line-height: 1.6;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.c-item {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--slate-300);
    font-weight: 600;
}

.c-item:hover {
    color: var(--white);
}

.c-item svg {
    color: var(--primary);
}

.footer-copyright {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 24px 0;
    font-size: 0.8rem;
    color: var(--slate-400);
}

.footer-policy-links {
    display: flex;
    gap: 20px;
}

.footer-policy-links a {
    color: var(--slate-400);
}

.footer-policy-links a:hover {
    color: var(--white);
}


/* ==========================================================================
    QR CODE IMAGE
    ========================================================================== */
.qr-image-rendered {
    width: 140px;
    height: 140px;
    display: block;
}

/* Logo link styling */.logo-link img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

/* ==========================================================================
   RESPONSIVENESS (MEDIA QUERIES)
   ========================================================================== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.8rem;
    }
    
    .hero-grid {
        gap: 30px;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .download-panel {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 40px;
    }
    
    .download-right {
        max-width: 400px;
        margin: 0 auto;
        width: 100%;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
    
    .footer-info-brand {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none; /* JS controlled for mobile menu */
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 50px;
    }
    
    .safety-badge-container {
        justify-content: center;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .about-svg-art {
        max-width: 260px;
    }
    
    .timeline-steps {
        padding-left: 30px;
    }
    
    .timeline-steps::before {
        left: 10px;
    }
    
    .step-num-container {
        left: -32px;
    }
    
    .step-number {
        width: 28px;
        height: 28px;
        font-size: 0.85rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-info-brand {
        grid-column: span 1;
    }
    
    .flex-row-between {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

/* JS Mobil Navigation Drawer Hooks */
.nav-menu.mobile-active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: var(--shadow-lg);
    border-bottom: 1px solid var(--slate-200);
    padding: 24px;
    gap: 16px;
    animation: slideDown 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.mobile-menu-toggle.active .bar:nth-child(1) {
    transform: translateY(7.5px) rotate(45deg);
}

.mobile-menu-toggle.active .bar:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .bar:nth-child(3) {
    transform: translateY(-7.5px) rotate(-45deg);
}