/* ==========================================
   Zentraq Soluções - Main Stylesheet
   ========================================== */

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

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

body {
    font-family: var(--font-secondary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Typography Headings */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    color: var(--text-primary);
    line-height: 1.3;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    transition: all var(--transition-speed);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--accent-primary);
    color: var(--text-light);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 2px solid var(--card-border);
}

.btn-secondary:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.btn-block {
    width: 100%;
}

/* Badge Pill */
.badge-pill {
    display: inline-block;
    padding: 0.35rem 1rem;
    background-color: var(--bg-accent);
    color: var(--accent-primary);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==========================================
   Header & Navigation
   ========================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--bg-primary);
    box-shadow: 0 2px 10px var(--shadow-color);
    z-index: 1000;
    transition: background-color var(--transition-speed), box-shadow var(--transition-speed);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo-text {
    font-family: var(--font-primary);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-primary);
    letter-spacing: 1px;
}

.main-nav ul {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.main-nav a {
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-speed);
}

.main-nav a:hover, .main-nav a.active {
    color: var(--accent-primary);
}

.main-nav .btn-nav {
    background-color: var(--accent-primary);
    color: var(--text-light);
    padding: 0.5rem 1.25rem;
    border-radius: var(--border-radius);
}

.main-nav .btn-nav:hover {
    background-color: var(--accent-hover);
    color: var(--text-light);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle, .menu-toggle {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background-color var(--transition-speed);
}

.theme-toggle:hover, .menu-toggle:hover {
    background-color: var(--bg-accent);
}

.menu-toggle {
    display: none;
}

/* ==========================================
   Hero Section
   ========================================== */
.hero-section {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

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

.hero-visual {
    display: flex;
    justify-content: center;
}

.hero-card-mockup {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 3rem 2.5rem;
    border-radius: 16px;
    box-shadow: 0 20px 40px var(--shadow-color);
    text-align: center;
    max-width: 380px;
    width: 100%;
}

.hero-card-mockup i {
    font-size: 3.5rem;
    color: var(--accent-secondary);
    margin-bottom: 1.5rem;
}

.hero-card-mockup h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.hero-card-mockup p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ==========================================
   Solutions Section
   ========================================== */
.solutions-section {
    padding: 100px 0;
    background-color: var(--bg-primary);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.solution-card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 2.5rem 2rem;
    border-radius: var(--border-radius);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    box-shadow: 0 4px 6px var(--shadow-color);
}

.solution-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px var(--shadow-color);
}

.card-icon {
    width: 60px;
    height: 60px;
    background-color: var(--bg-accent);
    color: var(--accent-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.solution-card h3 {
    font-size: 1.35rem;
    margin-bottom: 1rem;
}

.solution-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ==========================================
   App Section
   ========================================== */
.app-section {
    padding: 100px 0;
    background-color: var(--bg-secondary);
}

.app-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.app-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.app-features-list {
    margin-bottom: 2rem;
}

.app-features-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.app-features-list i {
    color: var(--accent-secondary);
    font-size: 1.2rem;
}

.app-download-buttons {
    display: flex;
    gap: 1rem;
}

.store-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--text-primary);
    color: var(--bg-primary);
    padding: 0.75rem 1.25rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 0.9rem;
    transition: opacity var(--transition-speed);
}

.store-btn:hover {
    opacity: 0.85;
}

.app-visual {
    display: flex;
    justify-content: center;
}

.phone-mockup {
    width: 280px;
    height: 560px;
    background: var(--card-bg);
    border: 10px solid var(--text-primary);
    border-radius: 40px;
    position: relative;
    box-shadow: 0 25px 50px var(--shadow-color);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.phone-notch {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 20px;
    background: var(--text-primary);
    border-bottom-left-radius: 12px;
    border-bottom-right-radius: 12px;
    z-index: 10;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background-color: var(--bg-primary);
    display: flex;
    flex-direction: column;
    padding: 24px 14px 14px 14px;
    position: relative;
}

.app-header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--card-border);
}

.app-brand {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--accent-primary);
}

.app-user-badge {
    background-color: var(--bg-accent);
    color: var(--text-secondary);
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 600;
}

.app-menu-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-bottom: 12px;
}

.app-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 10px 6px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.app-btn i {
    font-size: 1.1rem;
    color: var(--accent-primary);
    margin-bottom: 4px;
}

.app-btn span {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-primary);
}

.app-btn:hover, .app-btn.active {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.app-btn:hover i, .app-btn:hover span,
.app-btn.active i, .app-btn.active span {
    color: var(--text-light);
}

.app-display-screen {
    flex: 1;
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow-y: auto;
    font-size: 0.85rem;
}

.app-welcome-state i {
    font-size: 2rem;
    color: var(--accent-secondary);
    margin-bottom: 8px;
}

.app-welcome-state p {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

/* Simulation States inside App Display */
.sim-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 10px;
    width: 100%;
    margin-bottom: 8px;
    text-align: left;
}

.sim-title {
    font-weight: 700;
    font-size: 0.8rem;
    color: var(--accent-primary);
    margin-bottom: 4px;
}

.sim-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.qr-code-box {
    background: #FFF;
    padding: 8px;
    border-radius: 6px;
    display: inline-block;
    margin: 6px 0;
    color: #000;
    font-size: 1.8rem;
}

.camera-expanded-container {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: #0b0f19;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    border: 1px solid rgba(110, 188, 196, 0.3);
}

.camera-feed-screen {
    flex: 1;
    position: relative;
    width: 100%;
    overflow: hidden;
}

.camera-feed-screen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    filter: contrast(1.1) saturate(1.05);
    transition: filter 0.3s ease;
}

.camera-feed-screen.night-vision img {
    filter: grayscale(1) sepia(1) hue-rotate(70deg) contrast(1.5);
}

.camera-scanlines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%);
    background-size: 100% 4px;
    pointer-events: none;
    opacity: 0.6;
}

.camera-top-bar {
    position: absolute;
    top: 6px;
    left: 6px;
    right: 6px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 5;
    font-size: 0.65rem;
    color: #fff;
    text-shadow: 0 1px 2px rgba(0,0,0,0.8);
}

.rec-badge {
    background: rgba(255, 59, 48, 0.9);
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 4px;
}

.rec-dot {
    width: 6px;
    height: 6px;
    background: #fff;
    border-radius: 50%;
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.2; }
}

.camera-controls-bar {
    background: rgba(15, 23, 42, 0.95);
    padding: 6px 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(255,255,255,0.1);
    z-index: 5;
}

.cam-ctrl-btn {
    background: var(--accent-primary);
    color: #fff;
    border: none;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.65rem;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.2s;
}

.cam-ctrl-btn:hover {
    background: var(--accent-secondary);
    color: #21274E;
}

/* ==========================================
   Differentials Section
   ========================================== */
.differentials-section {
    padding: 100px 0;
    background-color: var(--bg-primary);
}

.differentials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.differential-item {
    text-align: center;
    padding: 2rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px var(--shadow-color);
}

.differential-item i {
    font-size: 2.5rem;
    color: var(--accent-primary);
    margin-bottom: 1.5rem;
}

.differential-item h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.differential-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ==========================================
   Contact Section
   ========================================== */
.contact-section {
    padding: 100px 0;
    background-color: var(--bg-secondary);
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.contact-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-weight: 500;
    color: var(--text-primary);
}

.contact-list i {
    color: var(--accent-primary);
    font-size: 1.2rem;
}

.contact-form-wrapper {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 25px var(--shadow-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-secondary);
    font-size: 1rem;
    transition: border-color var(--transition-speed);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
}

/* ==========================================
   Footer
   ========================================== */
.site-footer {
    background-color: var(--accent-primary);
    color: var(--text-light);
    padding-top: 80px;
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo-text {
    color: var(--text-light);
    margin-bottom: 1rem;
    display: inline-block;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

.footer-links h4, .footer-social h4 {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.footer-links ul li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-speed);
}

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

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--text-light);
    transition: background-color var(--transition-speed);
}

.social-icons a:hover {
    background-color: var(--accent-secondary);
}

.footer-bottom {
    padding: 2rem 0;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 968px) {
    .hero-container,
    .app-container,
    .contact-container,
    .footer-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .main-nav {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--bg-primary);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: left var(--transition-speed);
        box-shadow: 0 10px 10px var(--shadow-color);
    }

    .main-nav.active {
        left: 0;
    }

    .main-nav ul {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
    }

    .menu-toggle {
        display: block;
    }
}