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

:root {
    --primary-50: #e8f4f8;
    --primary-100: #d1e9f1;
    --primary-200: #a3d3e3;
    --primary-300: #76bdd5;
    --primary-400: #52a8c7;
    --primary-500: #3498DB;
    --primary-600: #2e86c2;
    --primary-700: #2874a6;
    --primary-800: #21618c;
    
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    --white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
}

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

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header & Navigation */
.header {
    background-color: #ffffff;
    border-bottom: 1px solid var(--gray-100);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 3rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    flex-shrink: 0;
}

.logo img {
    transition: transform 0.2s;
}

.logo:hover img {
    transform: scale(1.05);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-500);
    letter-spacing: -0.01em;
}

.nav-spacer {
    flex: 1;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.nav-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    transition: all 0.2s;
    white-space: nowrap;
    border: none;
}

.nav-button-outline {
    background: transparent;
    color: var(--gray-700);
}

.nav-button-outline:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.nav-button-primary {
    background: var(--primary-500);
    color: white;
    border: none;
}

.nav-button-primary:hover {
    background: var(--primary-600);
}

.nav-button-secondary {
    background: transparent;
    color: var(--primary-500);
    border: 2px solid var(--primary-500);
    cursor: pointer;
}

.nav-button-secondary:hover {
    background: var(--primary-50);
    border-color: var(--primary-600);
    color: var(--primary-600);
}

/* Hero Section */
.hero {
    padding: 6rem 0 4rem;
    background-image: url('images/hero_background.webp'));
    background-position: center center;
    background-size: cover;
    background-repeat: no-repeat;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(52, 152, 219, 0.7) 0%, rgba(46, 134, 194, 0.75) 100%);
    z-index: 1;
}

.hero .container-wide {
    position: relative;
    z-index: 2;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
}

.hero-title {
    font-size: 3.75rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: #ffffff;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

.gradient-text {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.375rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 2.5rem;
    line-height: 1.6;
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.1);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.primary-button-large {
    background: white;
    color: var(--primary-500);
    padding: 0.875rem 2.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.0625rem;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.primary-button-large:hover {
    background: var(--gray-50);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

.primary-button-large svg {
    transition: transform 0.2s;
}

.primary-button-large:hover svg {
    transform: translateX(3px);
}

.secondary-button-large {
    background: transparent;
    color: white;
    padding: 0.875rem 2.5rem;
    border: 2px solid white;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.0625rem;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    cursor: pointer;
}

.secondary-button-large:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

.secondary-button-large svg {
    transition: transform 0.2s;
}

.secondary-button-large:hover svg {
    transform: translateY(2px);
}

.hero-subtext {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}

.hero-visual {
    text-align: center;
    position: relative;
    z-index: 2;
}

.hero-image {
    width: 100%;
    max-width: 900px;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.2);
}


/* Dashboard Section */
.dashboard-section {
    padding: 6rem 0;
    background: white;
}

.dashboard-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem;
}

.dashboard-visual {
    text-align: center;
    margin: 3rem 0;
}

.dashboard-image {
    width: 100%;
    max-width: 1200px;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
    border: 1px solid var(--gray-200);
}

.dashboard-features {
    display: flex;
    justify-content: flex-start;
    gap: 2rem;
    flex-wrap: wrap;
    margin-top: 3rem;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.dashboard-feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--gray-800);
    font-size: 1.0625rem;
    text-align: left;
    flex: 0 0 auto;
    min-width: 280px;
}

.dashboard-feature-item svg {
    width: 24px;
    height: 24px;
    color: #10b981;
    flex-shrink: 0;
}

/* Feature Sections */
.feature-section {
    padding: 6rem 0;
    background: white;
}

.feature-section-alt {
    background: #f7f8fa;
}

.feature-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.feature-split.reverse {
    direction: rtl;
}

.feature-split.reverse > * {
    direction: ltr;
}

.feature-text {
    text-align: left;
}

.feature-title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: #1c1e21;
    letter-spacing: -0.02em;
}

.feature-description {
    font-size: 1.25rem;
    color: #65676b;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: #1c1e21;
    font-size: 1.0625rem;
    text-align: left;
}

.feature-item svg {
    width: 24px;
    height: 24px;
    color: #10b981;
    flex-shrink: 0;
}

.feature-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.feature-image {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
}

/* Use Cases Section */
.usecases {
    padding: 6rem 0;
    background: linear-gradient(180deg, #f7f8fa 0%, #ffffff 100%);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

.section-description {
    text-align: center;
    color: var(--gray-600);
    font-size: 1.125rem;
    margin-bottom: 3rem;
}

.usecases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
    margin-top: 3rem;
}

.usecase-card {
    background: white;
    border-radius: 12px;
    padding: 2.5rem;
    border: 1px solid var(--gray-200);
    transition: all 0.3s;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.usecase-card:hover {
    border-color: var(--primary-200);
    box-shadow: 0 4px 16px rgba(52, 152, 219, 0.1);
    transform: translateY(-2px);
}

.usecase-icon {
    width: 72px;
    height: 72px;
    margin-bottom: 1.5rem;
}

.usecase-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.usecase-card p {
    color: var(--gray-600);
    line-height: 1.7;
}

/* Features Grid */
.features {
    padding: 6rem 0;
    background-color: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    padding: 2rem;
    background-color: white;
    border-radius: 12px;
    border: 1px solid var(--gray-200);
    transition: all 0.3s;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.feature-card:hover {
    border-color: var(--primary-200);
    box-shadow: 0 4px 16px rgba(52, 152, 219, 0.1);
    transform: translateY(-2px);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-100) 0%, var(--primary-200) 100%);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--primary-600);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--gray-900);
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.7;
}

/* How It Works */
.how-it-works {
    padding: 6rem 0;
    background: var(--gray-50);
}

.steps {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr;
    gap: 2rem;
    align-items: center;
    margin-top: 3rem;
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
}

.step {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid var(--gray-200);
    position: relative;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.step-number {
    position: absolute;
    top: -18px;
    left: 50%;
    transform: translateX(-50%);
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.5rem;
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

.step h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
}

.step p {
    color: var(--gray-600);
    line-height: 1.7;
}

.step-arrow {
    font-size: 2rem;
    color: var(--primary-400);
    font-weight: 300;
}

/* Privacy Section */
.privacy-section {
    padding: 6rem 0;
    background-color: var(--white);
}

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

.privacy-description {
    color: var(--gray-600);
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.privacy-list {
    list-style: none;
}

.privacy-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    color: var(--gray-700);
    font-size: 1.125rem;
    text-align: left;
}

.privacy-list svg {
    color: var(--primary-600);
    flex-shrink: 0;
}

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

/* CTA Section */
.cta-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
    color: var(--white);
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-description {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
}

.cta-button-large {
    background-color: var(--white);
    color: var(--primary-500);
    padding: 1.25rem 3rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.125rem;
    display: inline-block;
    transition: all 0.2s;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.cta-button-large:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
    background-color: var(--gray-50);
}

.cta-note {
    margin-top: 1.5rem;
    opacity: 0.9;
    font-size: 0.95rem;
}

/* Footer */
.footer {
    background-color: var(--gray-900);
    color: var(--gray-300);
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand .logo {
    margin-bottom: 1rem;
}

.footer-brand .logo-text {
    color: var(--white);
}

.footer-tagline {
    color: var(--gray-400);
}

.footer-links {
    display: flex;
    gap: 3rem;
}

.footer-column h4 {
    color: var(--white);
    font-weight: 600;
    margin-bottom: 1rem;
}

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

.footer-column a {
    color: var(--gray-400);
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    transition: color 0.2s;
}

.footer-column a:hover {
    color: var(--white);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--gray-800);
    text-align: center;
    color: var(--gray-500);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .feature-split {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .feature-split.reverse {
        direction: ltr;
    }
    
    .feature-text {
        text-align: center;
    }
    
    .hero-title {
        font-size: 3rem;
    }
}

@media (max-width: 1024px) {
    .nav-links {
        display: none;
    }
    
    .usecases-grid {
        grid-template-columns: 1fr;
    }
    
    .steps {
        grid-template-columns: 1fr;
    }
    
    .step-arrow {
        display: none;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 4rem 0 3rem;
        background-position: center center;
        background-size: cover;
    }
    
    .hero-title,
    .feature-title {
        font-size: 2.5rem;
    }
    
    .hero-description,
    .feature-description {
        font-size: 1.125rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .primary-button-large,
    .secondary-button-large {
        width: 100%;
        justify-content: center;
    }
    
    .nav-actions {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .nav-button {
        width: 100%;
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .privacy-content {
        grid-template-columns: 1fr;
    }
    
    .privacy-visual {
        order: -1;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .cta-title {
        font-size: 2rem;
    }
    
    .dashboard-features {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
}

@media (max-width: 640px) {
    .nav-container {
        padding: 1rem 1.5rem;
    }
    
    .logo-text {
        font-size: 1.25rem;
    }
    
    .nav-actions {
        gap: 0.5rem;
    }
    
    .nav-button {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
    
    .nav-button span {
        display: none;
    }
    
    .nav-button svg {
        margin: 0;
    }
    
    .hero {
        padding: 3rem 0 2rem;
    }
    
    .hero::before {
        background: linear-gradient(180deg, rgba(52, 152, 219, 0.9) 0%, rgba(46, 134, 194, 0.92) 100%);
    }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .primary-button-large {
        width: 100%;
        justify-content: center;
    }
}