/* Layout Styles - Page Layout and Grid System */

/* Container */
.container {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
}

@media (min-width: 540px) {
    .container {
        max-width: var(--container-sm);
    }
}

@media (min-width: 768px) {
    .container {
        max-width: var(--container-md);
    }
}

@media (min-width: 1024px) {
    .container {
        max-width: var(--container-lg);
    }
}

@media (min-width: 1280px) {
    .container {
        max-width: var(--container-xl);
    }
}

@media (min-width: 1536px) {
    .container {
        max-width: var(--container-2xl);
    }
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--grid-gap-md);
}

.grid-cols-1 {
    grid-template-columns: var(--grid-cols-1);
}

.grid-cols-2 {
    grid-template-columns: var(--grid-cols-2);
}

.grid-cols-3 {
    grid-template-columns: var(--grid-cols-3);
}

.grid-cols-4 {
    grid-template-columns: var(--grid-cols-4);
}

.grid-cols-6 {
    grid-template-columns: var(--grid-cols-6);
}

.grid-cols-12 {
    grid-template-columns: var(--grid-cols-12);
}

/* Flexbox Utilities */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.flex-row {
    flex-direction: row;
}

.flex-wrap {
    flex-wrap: wrap;
}

.flex-nowrap {
    flex-wrap: nowrap;
}

.items-start {
    align-items: flex-start;
}

.items-end {
    align-items: flex-end;
}

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

.items-stretch {
    align-items: stretch;
}

.justify-start {
    justify-content: flex-start;
}

.justify-end {
    justify-content: flex-end;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-around {
    justify-content: space-around;
}

.justify-evenly {
    justify-content: space-evenly;
}

.gap-1 {
    gap: var(--spacing-xs);
}

.gap-2 {
    gap: var(--spacing-sm);
}

.gap-3 {
    gap: var(--spacing-md);
}

.gap-4 {
    gap: var(--spacing-lg);
}

.gap-5 {
    gap: var(--spacing-xl);
}

.gap-6 {
    gap: var(--spacing-2xl);
}

/* Navigation Bar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--header-border-color);
    box-shadow: var(--header-shadow);
    transition: all var(--transition-normal);
}

.nav-container {
    max-width: var(--container-2xl);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    text-decoration: none;
}

.nav-logo i {
    color: var(--primary-color);
}

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-normal);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--primary-color);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
}

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

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius);
    transition: all var(--transition-normal);
}

.nav-toggle:hover {
    background-color: var(--bg-secondary);
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    width: 250px;
    background-color: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    transition: transform var(--transition-normal);
    z-index: var(--z-sticky);
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.sidebar-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.sidebar-menu {
    padding: var(--spacing-md) 0;
}

.sidebar-item {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-normal);
    border-left: 3px solid transparent;
}

.sidebar-item:hover {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
}

.sidebar-item.active {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
}

.sidebar-item i {
    margin-right: var(--spacing-sm);
    width: 20px;
    text-align: center;
}

/* Main Content */
.main-content {
    min-height: 100vh;
    padding-top: var(--header-height);
}

/* Footer */
.footer {
    background-color: var(--footer-bg);
    color: var(--footer-color);
    padding: var(--spacing-5xl) 0 var(--spacing-3xl);
    margin-top: var(--spacing-5xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-4xl);
    margin-bottom: var(--spacing-4xl);
}

.footer-section h4 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-lg);
}

.footer-section p {
    color: var(--text-tertiary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-lg);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
}

.footer-logo i {
    color: var(--secondary-color);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section ul li a {
    color: var(--text-tertiary);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.footer-section ul li a:hover {
    color: var(--secondary-color);
}

.footer-section ul li i {
    margin-right: var(--spacing-sm);
    width: 16px;
    color: var(--secondary-color);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--text-inverse);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.social-link:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid var(--footer-border-color);
    padding-top: var(--spacing-xl);
    text-align: center;
    color: var(--text-tertiary);
}

.footer-bottom a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.footer-bottom a:hover {
    color: var(--text-inverse);
    text-decoration: underline;
}

/* Hero Section */
.hero {
    padding: var(--spacing-5xl) 0;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: var(--gradient-primary);
    opacity: 0.1;
    transform: skewY(-2deg);
    transform-origin: top left;
}

.hero-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.hero-text {
    max-width: 600px;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

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

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-2xl);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-card {
    background: var(--gradient-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-xl);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.card-header i {
    color: var(--primary-color);
}

.security-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.security-feature i {
    color: var(--secondary-color);
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
}

.section-header h2 {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.section-header p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Features Section */
.features {
    padding: var(--spacing-5xl) 0;
    background-color: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    color: var(--text-inverse);
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-lg);
}

.feature-tags {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* Stats Section */
.stats {
    padding: var(--spacing-4xl) 0;
    background: var(--gradient-primary);
    color: var(--text-inverse);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-2xl);
    text-align: center;
}

.stat-item {
    padding: var(--spacing-xl);
}

.stat-number {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    color: var(--text-inverse);
}

.stat-label {
    font-size: var(--font-size-lg);
    opacity: 0.9;
}

/* Roadmap Section */
.roadmap {
    padding: var(--spacing-5xl) 0;
    background-color: var(--bg-primary);
}

.roadmap-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.roadmap-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-primary);
    transform: translateX(-50%);
}

.roadmap-item {
    position: relative;
    margin-bottom: var(--spacing-4xl);
}

.roadmap-item:nth-child(odd) .roadmap-content {
    margin-left: 0;
    margin-right: 50%;
    padding-right: var(--spacing-2xl);
    text-align: right;
}

.roadmap-item:nth-child(even) .roadmap-content {
    margin-left: 50%;
    margin-right: 0;
    padding-left: var(--spacing-2xl);
    text-align: left;
}

.roadmap-marker {
    position: absolute;
    left: 50%;
    top: var(--spacing-lg);
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    transform: translateX(-50%);
    box-shadow: var(--shadow-lg);
    z-index: 1;
}

.roadmap-content h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.roadmap-period {
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.roadmap-features {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.roadmap-features li {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.roadmap-features li i {
    color: var(--success-color);
    margin-right: var(--spacing-sm);
}

.roadmap-status {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-md);
}

.roadmap-item:nth-child(odd) .roadmap-status {
    justify-content: flex-end;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
}

.status-badge.active {
    background-color: var(--success-bg);
    color: var(--success-color);
}

.status-badge {
    background-color: var(--bg-secondary);
    color: var(--text-tertiary);
}

/* CTA Section */
.cta {
    padding: var(--spacing-5xl) 0;
    background: var(--gradient-secondary);
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-inverse);
    margin-bottom: var(--spacing-lg);
}

.cta-content p {
    font-size: var(--font-size-lg);
    color: var(--text-inverse);
    opacity: 0.9;
    margin-bottom: var(--spacing-2xl);
    line-height: var(--line-height-relaxed);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.cta .btn {
    background-color: var(--text-inverse);
    color: var(--secondary-color);
    border-color: var(--text-inverse);
}

.cta .btn:hover {
    background-color: transparent;
    color: var(--text-inverse);
    border-color: var(--text-inverse);
}

.cta .btn-outline {
    background-color: transparent;
    color: var(--text-inverse);
    border-color: var(--text-inverse);
}

.cta .btn-outline:hover {
    background-color: var(--text-inverse);
    color: var(--secondary-color);
}

/* Responsive Layout */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background-color: var(--header-bg);
        border-top: 1px solid var(--header-border-color);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        transform: translateY(-100%);
        transition: transform var(--transition-normal);
        z-index: var(--z-dropdown);
    }

    .nav-menu.active {
        transform: translateY(0);
    }

    .nav-toggle {
        display: block;
    }

    .nav-buttons {
        display: none;
    }

    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

    .hero-buttons {
        justify-content: center;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .roadmap-timeline::before {
        left: var(--spacing-lg);
    }

    .roadmap-marker {
        left: var(--spacing-lg);
    }

    .roadmap-item:nth-child(odd) .roadmap-content,
    .roadmap-item:nth-child(even) .roadmap-content {
        margin-left: calc(var(--spacing-lg) + var(--spacing-2xl));
        margin-right: 0;
        padding-left: 0;
        padding-right: 0;
        text-align: left;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }

    .hero {
        padding: var(--spacing-3xl) 0;
    }

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .cta .btn {
        width: 100%;
        max-width: 300px;
    }
}