/* -------------------------------------------------
   Landing Page – Premium Styles
   ------------------------------------------------- */

/* Landing Body */
.landing-body {
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Navigation */
.landing-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(18, 18, 18, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(46, 204, 113, 0.1);
    transition: all var(--transition-medium);
}

.landing-nav.scrolled {
    background: rgba(18, 18, 18, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-md) var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-links a {
    color: var(--md-sys-color-on-surface);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-links a:hover {
    color: var(--md-sys-color-primary);
}

.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--md-sys-color-on-surface);
    cursor: pointer;
    padding: var(--space-xs);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url("../images/hero.png") center/cover no-repeat;
    padding: calc(80px + var(--space-xl)) var(--space-lg) var(--space-xl);
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg,
            rgba(18, 18, 18, 0.85) 0%,
            rgba(18, 18, 18, 0.7) 50%,
            rgba(46, 204, 113, 0.2) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    text-align: center;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    color: var(--md-sys-color-on-surface);
}

.gradient-text {
    background: linear-gradient(135deg, var(--md-sys-color-primary), #27AE60);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    line-height: 1.6;
    margin-bottom: var(--space-xl);
    color: var(--md-sys-color-on-surface-variant);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-2xl);
}

.btn-hero {
    font-size: 1.125rem;
    padding: var(--space-md) var(--space-xl);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
}

.hero-stats {
    display: flex;
    gap: var(--space-xl);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
}

.hero-stat .stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--md-sys-color-primary);
}

.hero-stat .stat-label {
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface-variant);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Problem / Solution */
.problem-solution {
    padding: var(--space-2xl) 0;
    background: var(--md-sys-color-surface);
}

.grid-2col {
    display: grid;
    gap: var(--space-xl);
    grid-template-columns: 1fr;
}

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

.problem-box,
.solution-box {
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
}

.icon-badge {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
}

.icon-badge.error {
    background: rgba(244, 67, 54, 0.1);
    color: #F44336;
}

.icon-badge.success {
    background: rgba(46, 204, 113, 0.1);
    color: var(--md-sys-color-primary);
}

.icon-badge i {
    width: 32px;
    height: 32px;
}

.problem-box h2,
.solution-box h2 {
    font-size: 1.75rem;
    margin-bottom: var(--space-lg);
}

.feature-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
}

.feature-list i {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 2px;
}

.problem-box .feature-list i {
    color: #F44336;
}

.solution-box .feature-list i {
    color: var(--md-sys-color-primary);
}

/* Features Section */
.features {
    padding: var(--space-2xl) 0;
    background: var(--md-sys-color-surface-container);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--md-sys-color-on-surface-variant);
}

.features-grid {
    display: grid;
    gap: var(--space-lg);
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    transition: all var(--transition-medium);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(46, 204, 113, 0.2);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--md-sys-color-primary), #27AE60);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
}

.feature-icon i {
    width: 28px;
    height: 28px;
    color: #000;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.feature-card p {
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.6;
}

/* Stats Section */
.stats {
    padding: var(--space-2xl) 0;
    background: var(--md-sys-color-surface);
}

.stats-grid {
    display: grid;
    gap: var(--space-lg);
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stat-card {
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-medium);
}

.stat-card:hover {
    transform: translateY(-4px);
}

.stat-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-md);
    background: rgba(46, 204, 113, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon i {
    width: 24px;
    height: 24px;
    color: var(--md-sys-color-primary);
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: var(--md-sys-color-primary);
    margin-bottom: var(--space-xs);
}

.stat-label {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--md-sys-color-on-surface);
}

.stat-desc {
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.5;
}

/* CTA Section */
.cta-section {
    padding: var(--space-2xl) 0;
    background: linear-gradient(135deg, rgba(46, 204, 113, 0.1), rgba(39, 174, 96, 0.05));
}

.cta-box {
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    text-align: center;
}

.cta-content h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--space-md);
}

.cta-content p {
    font-size: 1.125rem;
    color: var(--md-sys-color-on-surface-variant);
    margin-bottom: var(--space-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-xl);
}

.btn-cta {
    font-size: 1.125rem;
    padding: var(--space-md) var(--space-xl);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
}

.cta-features {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    flex-wrap: wrap;
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--md-sys-color-on-surface-variant);
}

.cta-feature i {
    width: 20px;
    height: 20px;
    color: var(--md-sys-color-primary);
}

/* Footer */
.landing-footer {
    background: var(--md-sys-color-surface-container);
    padding: var(--space-2xl) 0 var(--space-lg);
}

.footer-grid {
    display: grid;
    gap: var(--space-xl);
    grid-template-columns: 1fr;
    margin-bottom: var(--space-xl);
}

@media (min-width: 640px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.footer-logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
}

.footer-col h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--md-sys-color-primary);
}

.footer-col ul {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-col a {
    color: var(--md-sys-color-on-surface-variant);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-col a:hover {
    color: var(--md-sys-color-primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--glass-border);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-lang {
    display: flex;
    gap: var(--space-xs);
}

.lang-btn {
    padding: var(--space-xs) var(--space-sm);
    background: transparent;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--md-sys-color-on-surface-variant);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-btn:hover,
.lang-btn.active {
    background: var(--md-sys-color-primary);
    color: #000;
    border-color: var(--md-sys-color-primary);
}

/* Mobile Responsive */
@media (max-width: 767px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(18, 18, 18, 0.98);
        flex-direction: column;
        padding: var(--space-lg);
        gap: var(--space-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-medium);
        border-bottom: 1px solid rgba(46, 204, 113, 0.2);
    }

    .landing-nav.mobile-open .nav-links {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .mobile-nav-toggle {
        display: block;
    }

    .hero {
        min-height: 80vh;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn-hero {
        width: 100%;
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}