/* ========================================
   EJFLOW Landing Page Styles
   ======================================== */

/* CSS Variables */
:root {
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;

    --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;

    --green-500: #22c55e;
    --purple-500: #a855f7;
    --orange-500: #f97316;
    --cyan-500: #06b6d4;
    --pink-500: #ec4899;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

    --transition: all 0.2s ease;
    --transition-slow: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background: #fff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   Navigation
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-100);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: white;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.875rem;
}

.logo-text {
    color: var(--gray-900);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-600);
}

.nav-links a:hover {
    color: var(--primary-600);
}

.nav-buttons {
    display: flex;
    align-items: center;
    gap: 12px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: white;
    border-bottom: 1px solid var(--gray-200);
    padding: 24px;
    z-index: 999;
}

.mobile-menu.active {
    display: block;
}

.mobile-menu-links {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.mobile-menu-links a {
    font-size: 1rem;
    font-weight: 500;
    color: var(--gray-700);
    padding: 8px 0;
}

.mobile-menu-links hr {
    border: none;
    border-top: 1px solid var(--gray-200);
    margin: 8px 0;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: white;
    box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-700), var(--primary-800));
    box-shadow: 0 6px 20px 0 rgba(37, 99, 235, 0.35);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--gray-700);
    border: 1.5px solid var(--gray-300);
}

.btn-outline:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

.btn-glass {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-700);
    border: 1.5px solid rgba(37, 99, 235, 0.2);
}

.btn-glass:hover {
    background: rgba(37, 99, 235, 0.15);
    border-color: rgba(37, 99, 235, 0.3);
}

.btn-white {
    background: white;
    color: var(--primary-700);
    box-shadow: var(--shadow-md);
}

.btn-white:hover {
    background: var(--gray-50);
    transform: translateY(-1px);
}

.btn-glass-white {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border: 1.5px solid rgba(255, 255, 255, 0.3);
}

.btn-glass-white:hover {
    background: rgba(255, 255, 255, 0.25);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    position: relative;
    min-height: 100vh;
    padding: 120px 0 80px;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(ellipse at center, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
}

.hero-pattern {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(var(--gray-200) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.5;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero-content {
    max-width: 560px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--primary-50);
    color: var(--primary-700);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 24px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--primary-500);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-size: clamp(2.25rem, 4vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    color: var(--gray-900);
    margin-bottom: 24px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500), var(--purple-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 32px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 32px;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9375rem;
    color: var(--gray-600);
}

.hero-feature svg {
    color: var(--green-500);
}

/* Hero Image */
.hero-image {
    position: relative;
}

.hero-image .screenshot-main {
    width: 100%;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-2xl);
    border: 1px solid var(--gray-200);
}

/* ========================================
   Section Styles
   ======================================== */

section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 64px;
}

.section-badge {
    display: inline-block;
    padding: 6px 14px;
    background: var(--primary-50);
    color: var(--primary-700);
    font-size: 0.8125rem;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
}

/* ========================================
   Features Section
   ======================================== */

.features {
    background: var(--gray-50);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.feature-card {
    background: white;
    padding: 32px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--gray-200);
    transition: var(--transition-slow);
}

.feature-card:hover {
    border-color: var(--primary-200);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.feature-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-icon.blue { background: var(--primary-100); color: var(--primary-600); }
.feature-icon.green { background: #dcfce7; color: var(--green-500); }
.feature-icon.purple { background: #f3e8ff; color: var(--purple-500); }
.feature-icon.orange { background: #ffedd5; color: var(--orange-500); }
.feature-icon.cyan { background: #cffafe; color: var(--cyan-500); }
.feature-icon.pink { background: #fce7f3; color: var(--pink-500); }

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 0.9375rem;
    color: var(--gray-600);
    line-height: 1.6;
}

/* ========================================
   Screenshots Section
   ======================================== */

.screenshots {
    background: white;
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.screenshot-card {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
    transition: var(--transition-slow);
}

.screenshot-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.screenshot-card.main {
    grid-column: span 2;
}

.screenshot-card img {
    width: 100%;
    height: auto;
    display: block;
}

.screenshot-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 16px 20px;
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
    color: white;
    font-size: 0.9375rem;
    font-weight: 600;
}

/* ========================================
   Modules Section
   ======================================== */

.modules {
    background: var(--gray-50);
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.module-card {
    position: relative;
    background: white;
    padding: 28px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--gray-200);
    transition: var(--transition-slow);
}

.module-card:hover {
    border-color: var(--primary-300);
    box-shadow: var(--shadow-md);
}

.module-card.main {
    border: 2px solid var(--primary-500);
    background: linear-gradient(135deg, var(--primary-50), white);
}

.module-icon {
    width: 48px;
    height: 48px;
    background: var(--gray-100);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    color: var(--gray-600);
}

.module-card.main .module-icon {
    background: var(--primary-100);
    color: var(--primary-600);
}

.module-card h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.module-card p {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 16px;
}

.module-badge {
    display: inline-block;
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 100px;
}

.module-badge.included {
    background: var(--primary-100);
    color: var(--primary-700);
}

.module-badge.addon {
    background: var(--gray-100);
    color: var(--gray-600);
}

/* ========================================
   CTA Section
   ======================================== */

.cta {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700), var(--primary-800));
    padding: 80px 0;
}

.cta-content {
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
}

.cta h2 {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-weight: 800;
    color: white;
    margin-bottom: 16px;
}

.cta p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 32px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
}

/* ========================================
   Contact Section
   ======================================== */

.contact {
    background: white;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.contact-info h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 16px;
}

.contact-info > p {
    font-size: 1.0625rem;
    color: var(--gray-600);
    margin-bottom: 32px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1rem;
    color: var(--gray-700);
}

.contact-item svg {
    color: var(--primary-600);
}

.contact-form {
    background: var(--gray-50);
    padding: 36px;
    border-radius: var(--border-radius-xl);
    border: 1px solid var(--gray-200);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: 1rem;
    font-family: inherit;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--border-radius);
    background: white;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background: var(--gray-900);
    color: white;
    padding: 64px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 64px;
    margin-bottom: 48px;
}

.footer-brand p {
    color: var(--gray-400);
    margin-top: 16px;
    font-size: 0.9375rem;
    max-width: 280px;
}

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

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-column h4 {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    color: var(--gray-400);
}

.footer-column a {
    display: block;
    font-size: 0.9375rem;
    color: var(--gray-300);
    padding: 6px 0;
}

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

.footer-bottom {
    display: flex;
    justify-content: center;
    padding-top: 32px;
    border-top: 1px solid var(--gray-800);
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .hero-content {
        max-width: 100%;
        text-align: center;
    }

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

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

    .hero-image {
        max-width: 600px;
        margin: 0 auto;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .footer-links {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .screenshot-card.main {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-buttons {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero {
        padding: 100px 0 60px;
    }

    section {
        padding: 60px 0;
    }

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

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

    .footer-links {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .hero-features {
        flex-direction: column;
        align-items: center;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}