/* ============================================
   DengueOS Landing Page — Design System & Styles
   ============================================ */

:root {
    /* Colors */
    --color-bg: #0b1220;
    --color-bg-light: #0f172a;
    --color-bg-card: rgba(15, 23, 42, 0.6);
    --color-foreground: #e2e8f0;
    --color-foreground-muted: #64748b;
    --color-primary: #14b8a6;
    --color-primary-rgb: 20, 184, 166;
    --color-secondary: #2563eb;
    --color-secondary-rgb: 37, 99, 235;
    --color-border: rgba(51, 65, 85, 0.4);
    --color-border-hover: rgba(20, 184, 166, 0.3);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    --gradient-hero-bg: linear-gradient(160deg, #070d17, #0b1220 50%, #0f172a);

    /* Shadows */
    --glow-primary: 0 0 40px rgba(var(--color-primary-rgb), 0.15);
    --glow-btn: 0 4px 20px rgba(var(--color-primary-rgb), 0.3);
    --glow-btn-hover: 0 6px 30px rgba(var(--color-primary-rgb), 0.5);

    /* Radius */
    --radius: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;
}

/* ---- Reset & Base ---- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-foreground);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ---- Utilities ---- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section-padding {
    padding: 5rem 0;
}

@media (min-width: 992px) {
    .section-padding {
        padding: 7rem 0;
    }
}

.text-center {
    text-align: center;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-label {
    color: var(--color-primary);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.section-title {
    font-size: 2rem;
    font-weight: 800;
    margin-top: 0.75rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.5rem;
    }
}

.section-subtitle {
    color: var(--color-foreground-muted);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

.section-header {
    max-width: 640px;
    margin: 0 auto 4rem;
}

/* ---- Glass Card ---- */
.glass-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--glow-primary);
    transition: border-color 0.3s, transform 0.3s;
}

.glass-card:hover {
    border-color: var(--color-border-hover);
}

/* ---- Buttons ---- */
.btn-primary-glow {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius);
    font-weight: 700;
    font-size: 0.875rem;
    background: var(--gradient-primary);
    color: var(--color-bg);
    box-shadow: var(--glow-btn);
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.btn-primary-glow:hover {
    box-shadow: var(--glow-btn-hover);
    transform: translateY(-2px);
}

.btn-outline-glow {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius);
    font-weight: 700;
    font-size: 0.875rem;
    background: transparent;
    color: var(--color-primary);
    border: 1px solid rgba(var(--color-primary-rgb), 0.4);
    transition: all 0.3s;
    cursor: pointer;
}

.btn-outline-glow:hover {
    border-color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.1);
    box-shadow: 0 0 20px rgba(var(--color-primary-rgb), 0.15);
}

/* ---- Background Effects ---- */
.bg-grid-pattern {
    background-image:
        linear-gradient(rgba(51, 65, 85, 0.25) 1px, transparent 1px),
        linear-gradient(90deg, rgba(51, 65, 85, 0.25) 1px, transparent 1px);
    background-size: 60px 60px;
}

.bg-blob {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s;
    padding: 0;
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

@media (min-width: 992px) {
    .navbar-inner {
        height: 80px;
    }
}

.navbar.navbar-scrolled {
    background: rgba(11, 18, 32, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 800;
    font-size: 1.15rem;
    color: var(--color-foreground);
}

.navbar-brand-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: var(--color-bg);
    font-weight: 800;
    font-size: 0.8rem;
}

.navbar-links {
    display: none;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

@media (min-width: 992px) {
    .navbar-links {
        display: flex;
    }
}

.navbar-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-foreground-muted);
    transition: color 0.3s;
}

.navbar-links a:hover {
    color: var(--color-foreground);
}

.navbar-cta {
    display: none;
}

@media (min-width: 992px) {
    .navbar-cta {
        display: block;
    }
}

.navbar-toggle {
    display: block;
    background: none;
    border: none;
    color: var(--color-foreground);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.25rem;
}

@media (min-width: 992px) {
    .navbar-toggle {
        display: none;
    }
}

.navbar-mobile {
    display: none;
    background: rgba(11, 18, 32, 0.97);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 1.5rem 1.5rem;
}

.navbar-mobile.open {
    display: block;
}

.navbar-mobile a {
    display: block;
    padding: 0.75rem 0;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-foreground-muted);
}

.navbar-mobile a:hover {
    color: var(--color-foreground);
}

/* ============================================
   HERO
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--gradient-hero-bg);
}

.hero .bg-grid-pattern {
    position: absolute;
    inset: 0;
    opacity: 0.4;
}

.hero .bg-blob-1 {
    top: 5rem;
    left: -10rem;
    width: 500px;
    height: 500px;
    background: rgba(var(--color-primary-rgb), 0.08);
    filter: blur(120px);
}

.hero .bg-blob-2 {
    bottom: 5rem;
    right: -10rem;
    width: 400px;
    height: 400px;
    background: rgba(var(--color-secondary-rgb), 0.08);
    filter: blur(100px);
}

.hero-grid {
    display: grid;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 2;
    padding-top: 6rem;
}

@media (min-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
        padding-top: 0;
    }
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.hero-badge {
    padding: 0.3rem 0.85rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid rgba(var(--color-primary-rgb), 0.3);
    color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.08);
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
    .hero h1 {
        font-size: 3rem;
    }
}

@media (min-width: 1200px) {
    .hero h1 {
        font-size: 3.5rem;
    }
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--color-foreground-muted);
    margin-bottom: 2rem;
    max-width: 480px;
    line-height: 1.7;
}

.hero-ctas {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.hero-image-wrapper {
    position: relative;
}

.hero-image-wrapper img {
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
}

.hero-image-overlay {
    position: absolute;
    inset: 0;
    border-radius: var(--radius-xl);
    background: linear-gradient(to top, var(--color-bg) 0%, transparent 50%);
    pointer-events: none;
}

.hero-float-accent {
    position: absolute;
    bottom: -1rem;
    left: -1rem;
    width: 6rem;
    height: 6rem;
    border-radius: var(--radius-xl);
    background: rgba(var(--color-primary-rgb), 0.15);
    filter: blur(30px);
    animation: float 6s ease-in-out infinite;
}

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

/* ============================================
   SOLUTION
   ============================================ */
.solution-grid {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .solution-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.solution-card .icon-box {
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    background: rgba(var(--color-primary-rgb), 0.1);
    transition: background 0.3s;
}

.solution-card:hover .icon-box {
    background: rgba(var(--color-primary-rgb), 0.2);
}

.solution-card .icon-box i {
    font-size: 1.25rem;
    color: var(--color-primary);
}

.solution-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.solution-card p {
    font-size: 0.875rem;
    color: var(--color-foreground-muted);
    line-height: 1.6;
}

/* ============================================
   MODULES
   ============================================ */
.modules-grid {
    display: grid;
    gap: 1.25rem;
    grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 992px) {
    .modules-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.module-card {
    position: relative;
}

.module-card i {
    font-size: 1.75rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
    display: block;
}

.module-card h3 {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.module-card p {
    font-size: 0.75rem;
    color: var(--color-foreground-muted);
}

.badge-soon {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    font-size: 0.6rem;
    font-weight: 800;
    text-transform: uppercase;
    padding: 0.2rem 0.5rem;
    border-radius: 50px;
    background: rgba(var(--color-secondary-rgb), 0.2);
    color: var(--color-secondary);
}

.modules-dashboard {
    margin-top: 4rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
}

.modules-dashboard::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, var(--color-bg) 0%, transparent 60%);
    pointer-events: none;
}

/* ============================================
   HOW IT WORKS
   ============================================ */
.steps-grid {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .steps-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.step-card {
    position: relative;
    overflow: hidden;
}

.step-number {
    position: absolute;
    top: 0.75rem;
    right: 1rem;
    font-size: 3.5rem;
    font-weight: 800;
    opacity: 0.15;
    line-height: 1;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    user-select: none;
}

.step-content {
    position: relative;
    z-index: 1;
    padding-top: 2.5rem;
}

.step-content h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.step-content p {
    font-size: 0.875rem;
    color: var(--color-foreground-muted);
    line-height: 1.6;
}

/* ============================================
   INDICATORS
   ============================================ */
.kpi-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 992px) {
    .kpi-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.kpi-card {
    text-align: center;
}

.kpi-value {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.35rem;
}

@media (min-width: 768px) {
    .kpi-value {
        font-size: 2.5rem;
    }
}

.kpi-label {
    font-size: 0.8rem;
    color: var(--color-foreground-muted);
    margin-bottom: 1rem;
}

.progress-bar-bg {
    width: 100%;
    height: 0.5rem;
    border-radius: 50px;
    background: var(--color-bg-light);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    border-radius: 50px;
    background: var(--gradient-primary);
    width: 0;
    transition: width 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ============================================
   SECURITY
   ============================================ */
.security-grid {
    display: grid;
    gap: 3rem;
    align-items: center;
}

@media (min-width: 992px) {
    .security-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.security-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.security-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem !important;
}

.security-item .icon-box {
    width: 2.5rem;
    height: 2.5rem;
    min-width: 2.5rem;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(var(--color-primary-rgb), 0.1);
}

.security-item .icon-box i {
    font-size: 1.1rem;
    color: var(--color-primary);
}

.security-item p {
    font-size: 0.875rem;
    line-height: 1.6;
    color: rgba(226, 232, 240, 0.9);
}

.security-text h2 {
    margin-bottom: 1.5rem;
}

.security-text > p {
    color: var(--color-foreground-muted);
    line-height: 1.7;
    margin-bottom: 2rem;
}

/* ============================================
   FAQ
   ============================================ */
.faq-wrapper {
    max-width: 768px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 0.75rem;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    color: var(--color-foreground);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-align: left;
    font-family: inherit;
    backdrop-filter: blur(20px);
}

.faq-question:hover {
    color: var(--color-primary);
    border-color: var(--color-border-hover);
}

.faq-question .faq-icon {
    font-size: 1.25rem;
    transition: transform 0.3s;
    color: var(--color-foreground-muted);
    flex-shrink: 0;
    margin-left: 1rem;
}

.faq-item.active .faq-question {
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    border-bottom-color: transparent;
    color: var(--color-primary);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-top: none;
    border-bottom-left-radius: var(--radius-xl);
    border-bottom-right-radius: var(--radius-xl);
    backdrop-filter: blur(20px);
}

.faq-answer-inner {
    padding: 0 1.5rem 1.25rem;
    font-size: 0.875rem;
    color: var(--color-foreground-muted);
    line-height: 1.7;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    border-top: 1px solid var(--color-border);
    padding: 3rem 0;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    text-align: center;
}

@media (min-width: 768px) {
    .footer-inner {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.footer-brand p {
    font-size: 0.75rem;
    color: var(--color-foreground-muted);
    margin-top: 0.25rem;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

.footer-links a {
    font-size: 0.75rem;
    color: var(--color-foreground-muted);
}

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

.footer-contact {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 1rem;
}

.footer-contact-link {
    font-size: 0.8rem;
    color: var(--color-foreground-muted);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: color 0.2s;
}
.footer-contact-link:hover {
    color: var(--color-foreground);
}

.btn-whatsapp {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1.25rem;
    border-radius: 2rem;
    background: #25D366;
    color: #fff;
    font-size: 0.8rem;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.2s, transform 0.2s;
}
.btn-whatsapp:hover {
    background: #1ebe5d;
    transform: translateY(-1px);
    color: #fff;
}
.btn-whatsapp-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    justify-content: center;
    font-size: 1rem;
    gap: 0;
}

/* Centered footer layout (matches React version) */
.footer-inner-centered {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    text-align: center;
}

.footer-brand-centered {
    text-align: center;
}
.footer-brand-centered p {
    font-size: 0.75rem;
    color: var(--color-foreground-muted);
    margin-top: 0.25rem;
}

.footer-links-centered {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    justify-content: center;
}
.footer-links-centered a {
    font-size: 0.75rem;
    color: var(--color-foreground-muted);
}
.footer-links-centered a:hover {
    color: var(--color-foreground);
}

.footer-contact-centered {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}
@media (min-width: 576px) {
    .footer-contact-centered {
        flex-direction: row;
        gap: 1.25rem;
    }
}
.footer {
    padding: 4rem 0 2rem;
    border-top: 1px solid rgba(255,255,255,0.08);
    background: rgba(255,255,255,0.02);
    backdrop-filter: blur(10px);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr 1fr;
    gap: 2rem;
    align-items: start;
}

.footer-logo {
    display: inline-flex;
    margin-bottom: 1rem;
}

.footer-description {
    color: rgba(255,255,255,0.72);
    line-height: 1.7;
    max-width: 420px;
    font-size: 0.95rem;
}

.footer-column {
    display: flex;
    flex-direction: column;
}

.footer-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #fff;
}

.footer-links,
.footer-contact-list {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.footer-links a,
.footer-contact-link,
.footer-panel-link {
    color: rgba(255,255,255,0.72);
    text-decoration: none;
    transition: 0.2s ease;
}

.footer-links a:hover,
.footer-contact-link:hover,
.footer-panel-link:hover {
    color: #fff;
}

.btn-whatsapp-footer {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.1rem;
    border-radius: 14px;
    text-decoration: none;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, #16a34a, #22c55e);
    box-shadow: 0 10px 30px rgba(34,197,94,0.18);
    width: fit-content;
}

.footer-bottom {
    margin-top: 2.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid rgba(255,255,255,0.08);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 0.75rem;
    color: rgba(255,255,255,0.58);
    font-size: 0.9rem;
}

@media (max-width: 991px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
}

.footer-copy {
    font-size: 0.75rem;
    color: var(--color-foreground-muted);
}

/* ============================================
   ANIMATIONS
   ============================================ */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
.animate-on-scroll[data-delay="1"] { transition-delay: 0.1s; }
.animate-on-scroll[data-delay="2"] { transition-delay: 0.2s; }
.animate-on-scroll[data-delay="3"] { transition-delay: 0.25s; }
.animate-on-scroll[data-delay="4"] { transition-delay: 0.3s; }
.animate-on-scroll[data-delay="5"] { transition-delay: 0.35s; }
.animate-on-scroll[data-delay="6"] { transition-delay: 0.4s; }
.animate-on-scroll[data-delay="7"] { transition-delay: 0.45s; }
.animate-on-scroll[data-delay="8"] { transition-delay: 0.5s; }

/* Relative sections */
section {
    position: relative;
    overflow: hidden;
}