/* ==========================================================================
   LCTB - Ultra-Fluid Organic Modern Design System (Zero Stiffness)
   ========================================================================== */

:root {
    --primary-blue: #0066FF;
    --primary-deep: #0B1E36;
    --primary-cyan: #00D2FF;
    --accent-glow: rgba(0, 210, 255, 0.4);
    --bg-page: #F4F8FF;
    --bg-card: #FFFFFF;
    --text-main: #0F172A;
    --text-muted: #64748B;
    --glass-bg: rgba(255, 255, 255, 0.88);
    --glass-border: rgba(255, 255, 255, 0.6);
    --shadow-soft: 0 12px 35px -10px rgba(0, 102, 255, 0.08);
    --shadow-hover: 0 25px 50px -12px rgba(0, 102, 255, 0.22);
    --shadow-glow: 0 0 30px rgba(0, 210, 255, 0.35);
    --gradient-hero: linear-gradient(135deg, #091E3A 0%, #1A54B8 50%, #0096FE 100%);
    --gradient-accent: linear-gradient(135deg, #0066FF 0%, #00D2FF 100%);
    --gradient-card: linear-gradient(145deg, #FFFFFF 0%, #F0F6FF 100%);
    --radius-sm: 16px;
    --radius-md: 24px;
    --radius-lg: 32px;
    --radius-full: 9999px;
    --transition-spring: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-main);
    background-color: var(--bg-page);
    overflow-x: hidden;
    scroll-behavior: smooth;
    line-height: 1.7;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #E2E8F0;
}
::-webkit-scrollbar-thumb {
    background: var(--primary-blue);
    border-radius: 4px;
}

/* Animations */
@keyframes floatSlow {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(1deg); }
}
@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 210, 255, 0.2); }
    50% { box-shadow: 0 0 35px rgba(0, 210, 255, 0.5); }
}
@keyframes pulseRing {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 12px rgba(239, 68, 68, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}
@keyframes shakeError {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-8px); }
    40%, 80% { transform: translateX(8px); }
}

/* RED ERROR HIGHLIGHT & INLINE MESSAGES */
.is-invalid-field {
    border: 2px solid #EF4444 !important;
    background-color: #FEF2F2 !important;
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.25) !important;
    animation: shakeError 0.4s ease;
}
.invalid-feedback-custom {
    color: #EF4444;
    font-size: 0.82rem;
    font-weight: 700;
    margin-top: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Navbar */
.navbar-lctb {
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 102, 255, 0.08);
    padding: 16px 0;
    transition: var(--transition-smooth);
}
.navbar-lctb.scrolled {
    padding: 12px 0;
    box-shadow: 0 10px 30px -10px rgba(0, 102, 255, 0.12);
    background: rgba(255, 255, 255, 0.95);
}
.navbar-brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
    font-size: 1.4rem;
    color: var(--primary-deep);
    text-decoration: none;
}
.brand-icon {
    width: 44px;
    height: 44px;
    background: var(--gradient-accent);
    color: white;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: 0 8px 20px rgba(0, 102, 255, 0.3);
    transition: var(--transition-spring);
}
.navbar-brand-logo:hover .brand-icon {
    transform: rotate(12deg) scale(1.1);
}
.nav-link {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-muted);
    padding: 8px 20px !important;
    border-radius: var(--radius-full);
    transition: var(--transition-smooth);
}
.nav-link:hover, .nav-link.active {
    color: var(--primary-blue);
    background: rgba(0, 102, 255, 0.08);
}
.btn-nav-cta {
    background: var(--gradient-accent);
    color: white !important;
    border-radius: var(--radius-full);
    padding: 10px 24px !important;
    font-weight: 700;
    font-size: 0.95rem;
    box-shadow: 0 8px 25px -5px rgba(0, 102, 255, 0.45);
    transition: var(--transition-spring);
}
.btn-nav-cta:hover {
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 15px 30px -5px rgba(0, 102, 255, 0.6);
}

/* Hero Section */
.hero-section {
    background: var(--gradient-hero);
    position: relative;
    padding: 160px 0 110px 0;
    overflow: hidden;
    color: white;
}
.hero-glow-1 {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 210, 255, 0.28) 0%, rgba(0,0,0,0) 70%);
    top: -150px;
    right: -150px;
    pointer-events: none;
    animation: floatSlow 8s infinite ease-in-out;
}
.hero-glow-2 {
    position: absolute;
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, rgba(26, 84, 184, 0.35) 0%, rgba(0,0,0,0) 70%);
    bottom: -100px;
    left: -100px;
    pointer-events: none;
}
.badge-lctb-hero {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 22px;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: #E0F2FE;
    border-radius: var(--radius-full);
    font-size: 0.88rem;
    font-weight: 600;
    margin-bottom: 24px;
    animation: pulseGlow 4s infinite alternate;
}
.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.3rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    color: #FFFFFF;
}
.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: rgba(255, 255, 255, 0.88);
    font-weight: 400;
    max-width: 600px;
}

/* HERO STAT CARDS */
.hero-stat-card {
    background: rgba(255, 255, 255, 0.14);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: var(--radius-md);
    padding: 22px 20px;
    color: white;
    transition: var(--transition-spring);
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.hero-stat-number {
    font-size: clamp(1.6rem, 3.5vw, 2.2rem);
    font-weight: 800;
    line-height: 1.1;
    color: #FFFFFF;
    word-break: break-word;
}
.hero-stat-label {
    font-size: clamp(0.78rem, 1.5vw, 0.9rem);
    opacity: 0.88;
    margin-top: 4px;
    line-height: 1.3;
}
.hero-stat-card:hover {
    background: rgba(255, 255, 255, 0.24);
    transform: translateY(-6px) scale(1.02);
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

/* SECTION TAG & TITLE */
.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(0, 102, 255, 0.08);
    color: var(--primary-blue);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 14px;
}
.section-title {
    font-size: clamp(1.8rem, 4vw, 2.3rem);
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: -0.02em;
}
.section-desc {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 620px;
    margin: 0 auto;
}

/* PREMIUM ORGANIC CARDS */
.card-premium-fluid {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0, 102, 255, 0.08);
    box-shadow: var(--shadow-soft);
    padding: 32px;
    transition: var(--transition-spring);
    position: relative;
    overflow: hidden;
}
.card-premium-fluid:hover {
    transform: translateY(-6px) scale(1.01);
    box-shadow: var(--shadow-hover);
    border-color: rgba(0, 102, 255, 0.2);
}

/* FEATURE PILL ITEM */
.feature-pill-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: #F8FAFC;
    border: 1px solid #E2E8F0;
    border-radius: var(--radius-md);
    transition: var(--transition-spring);
}
.feature-pill-item:hover {
    background: #FFFFFF;
    border-color: var(--primary-blue);
    transform: translateX(6px);
    box-shadow: 0 10px 25px -5px rgba(0, 102, 255, 0.12);
}

/* COMPACT SLEEK CTA BANNER */
.cta-banner-glass {
    background: linear-gradient(135deg, #091E3A 0%, #0052CC 60%, #00D2FF 100%);
    border-radius: 32px;
    padding: 32px 40px;
    color: white;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 50px -10px rgba(0, 102, 255, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* SYMPTOM CARDS */
.symptom-card-fluid {
    background: var(--gradient-card);
    border-radius: var(--radius-md);
    padding: 26px;
    border: 1px solid rgba(226, 232, 240, 0.8);
    box-shadow: var(--shadow-soft);
    transition: var(--transition-spring);
    height: 100%;
    position: relative;
    overflow: hidden;
}
.symptom-card-fluid:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-hover);
    border-color: rgba(0, 102, 255, 0.25);
    background: #FFFFFF;
}
.symptom-icon-box {
    width: 54px;
    height: 54px;
    border-radius: 16px;
    background: rgba(0, 102, 255, 0.08);
    color: var(--primary-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 18px;
    transition: var(--transition-spring);
}
.symptom-card-fluid:hover .symptom-icon-box {
    background: var(--gradient-accent);
    color: white;
    transform: rotate(8deg) scale(1.15);
    box-shadow: var(--shadow-glow);
}

/* WIZARD CONTAINER */
.wizard-box-fluid {
    background: #FFFFFF;
    border-radius: 32px;
    border: 1px solid rgba(0, 102, 255, 0.1);
    box-shadow: 0 30px 70px -15px rgba(0, 102, 255, 0.15);
    overflow: hidden;
}
.wizard-header-fluid {
    background: linear-gradient(135deg, #091E3A 0%, #0052CC 100%);
    color: white;
    padding: 32px 36px;
}
.progress-bar-fluid {
    height: 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-top: 16px;
}
.progress-fill-fluid {
    height: 100%;
    background: var(--gradient-accent);
    width: 0%;
    transition: width 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    border-radius: var(--radius-full);
}

/* OPTION BUTTONS */
.option-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    border: 2px solid #E2E8F0;
    border-radius: var(--radius-md);
    background: #FFFFFF;
    cursor: pointer;
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-main);
    transition: var(--transition-spring);
    margin-bottom: 12px;
}
.option-btn:hover {
    border-color: var(--primary-blue);
    background: rgba(0, 102, 255, 0.04);
    transform: translateX(6px);
}
.option-btn.selected {
    border-color: var(--primary-blue);
    background: rgba(0, 102, 255, 0.08);
    color: var(--primary-blue);
    transform: translateX(8px);
}

/* ACCORDION FAQ */
.accordion-lctb .accordion-item {
    border: 1px solid rgba(0, 102, 255, 0.08);
    background: white;
    border-radius: var(--radius-md) !important;
    margin-bottom: 14px;
    overflow: hidden;
    transition: var(--transition-spring);
    box-shadow: var(--shadow-soft);
}
.accordion-lctb .accordion-button {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--text-main);
    padding: 20px 24px;
    background: white;
    box-shadow: none;
}

/* SURVEY FEEDBACK CARDS */
.feedback-card-fluid {
    background: #FFFFFF;
    border-radius: var(--radius-md);
    padding: 22px;
    border: 1px solid rgba(0, 102, 255, 0.08);
    box-shadow: var(--shadow-soft);
    transition: var(--transition-spring);
}

/* BUTTONS */
.btn-custom {
    background: var(--gradient-accent);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    padding: 14px 30px;
    font-weight: 700;
    box-shadow: 0 10px 25px -5px rgba(0, 102, 255, 0.45);
    transition: var(--transition-spring);
}
.btn-custom:hover {
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 15px 35px -5px rgba(0, 102, 255, 0.6);
    color: white;
}

/* ULTRA-MODERN DARK FOOTER */
.footer-modern {
    background: #040D1A !important;
    color: #CBD5E1 !important;
    position: relative;
    border-top: 1px solid rgba(0, 210, 255, 0.2);
}
.footer-modern p, 
.footer-modern small, 
.footer-modern span, 
.footer-modern div {
    color: #CBD5E1;
}
.footer-modern .text-muted {
    color: #94A3B8 !important;
}
.footer-modern h4, 
.footer-modern h5, 
.footer-modern h6 {
    color: #FFFFFF !important;
}
.footer-glow-top {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00D2FF, transparent);
    box-shadow: 0 0 15px #00D2FF;
}
.hotline-badge-pulse {
    animation: pulseRing 2.5s infinite;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: #EF4444;
    color: #FFFFFF !important;
    font-weight: 800;
    border-radius: var(--radius-full);
    box-shadow: 0 8px 20px rgba(239, 68, 68, 0.5);
}
.footer-link {
    color: #E2E8F0 !important;
    text-decoration: none;
    transition: var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
}
.footer-link:hover {
    color: #00D2FF !important;
    transform: translateX(5px);
}

/* MOBILE RESPONSIVE BREAKPOINTS */
@media (max-width: 576px) {
    .hero-stat-card {
        padding: 18px 14px;
        text-align: center;
    }
    .hero-stat-card.d-flex {
        flex-direction: column;
        align-items: center !important;
        text-align: center;
    }
    .cta-banner-glass {
        padding: 24px 18px;
        text-align: center;
    }
}