:root {
    /* Brand Colors */
    --color-primary: #2563eb;       /* Royal Blue */
    --color-primary-dark: #1e40af;  /* Darker Blue */
    --color-secondary: #0f172a;     /* Dark Slate */
    --color-bg-light: #f8fafc;      /* Light Background */
    --color-bg-alt: #f1f5f9;        /* Alternative Background */
    --color-text-main: #1e293b;     /* Text Color */
    --color-text-light: #64748b;    /* Subtext Color */
    --color-text-muted: #94a3b8;    /* Muted Text */
    --color-white: #ffffff;
    --color-success: #10b981;       /* Green for checkmarks */

    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    --gradient-dark: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);

    /* Shadows & Effects */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --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 10px 10px -5px rgb(0 0 0 / 0.04);
    --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.2);
    --backdrop-blur: blur(12px);

    /* Spacing */
    --container-padding: 2rem;
    --max-width: 1200px;
    --header-height: 80px;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
}

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

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: var(--color-text-main);
    background-color: var(--color-bg-light);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

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

/* Utility Classes */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all 0.3s ease;
    font-size: 1rem;
    letter-spacing: 0.025em;
    cursor: pointer;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-bg-light);
    transform: translateY(-2px);
}

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

.btn-outline-primary:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn-text {
    color: var(--color-text-main);
    font-weight: 500;
}

.btn-text:hover {
    color: var(--color-primary);
}

.full-width {
    width: 100%;
}

.text-primary {
    color: var(--color-primary);
}

/* Icons & Helpers */
.logo-icon {
    color: var(--color-primary);
    fill: rgba(37, 99, 235, 0.1);
}

.btn-icon-right {
    margin-left: 0.5rem;
    width: 1.25rem;
}

.btn-icon-left {
    margin-right: 0.5rem;
    width: 1.25rem;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    z-index: 1000;
    border-bottom: 1px solid rgba(15, 23, 42, 0.05);
    transition: all 0.3s ease;
}

header .container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    color: var(--color-text-main);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

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

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    color: var(--color-secondary);
}

/* Hero Section */
.hero {
    padding-top: 180px; /* Ensure ample space below fixed header */
    padding-bottom: 8rem;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

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

.hero-text h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    font-weight: 800;
    color: var(--color-secondary);
    margin-bottom: 1.5rem;
    letter-spacing: -0.025em;
}

.hero-text h1 span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-text p {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

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

.hero-visual {
    position: relative;
    animation: float 6s ease-in-out infinite;
}

.hero-visual img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
    transition: transform 0.5s ease;
}

.hero-visual:hover img {
    transform: perspective(1000px) rotateY(0) rotateX(0);
}

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

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

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

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

.feature-card {
    background: var(--color-white);
    border: 1px solid rgba(15, 23, 42, 0.05);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(37, 99, 235, 0.2);
}

.feature-icon {
    width: 3rem;
    height: 3rem;
    background: rgba(37, 99, 235, 0.1);
    color: var(--color-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

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

.feature-card p {
    color: var(--color-text-light);
    font-size: 1rem;
}

/* Featured / Large Cards */
.feature-card.large {
    grid-column: span 2;
    background: var(--gradient-dark);
    color: var(--color-white);
}

.feature-card.large h3,
.feature-card.large p {
    color: var(--color-white);
}

.feature-card.large .feature-icon {
    background: rgba(255, 255, 255, 0.2);
    color: var(--color-white);
}

/* How It Works Section */
.how-it-works {
    padding: 6rem 0;
    background-color: var(--color-bg-alt);
}

.steps-grid {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.step-card {
    text-align: center;
    flex: 1;
    position: relative;
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    color: white;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    position: relative;
    z-index: 2;
    box-shadow: 0 0 0 8px rgba(37, 99, 235, 0.1);
}

.step-icon {
    font-size: 2rem;
    color: var(--color-secondary);
    margin-bottom: 1rem;
    height: 3rem;
}

.step-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: 0.5rem;
}

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

.step-arrow {
    color: var(--color-text-light);
    opacity: 0.3;
}

/* Pricing Section */
.pricing {
    padding: 6rem 0;
    background: var(--color-white);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    align-items: stretch;
}

.pricing-card {
    background: var(--color-white);
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: var(--radius-xl);
    padding: 2.5rem 2rem;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.pricing-card.popular {
    border: 2px solid var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: scale(1.05);
    z-index: 10;
}

.pricing-card.popular:hover {
    transform: scale(1.05) translateY(-8px);
}

.popular-tag {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: white;
    padding: 0.25rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-header {
    text-align: center;
    margin-bottom: 2rem;
}

.pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: 0.5rem;
}

.price {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-text-main);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.price span {
    font-size: 1rem;
    color: var(--color-text-light);
    font-weight: 400;
}

.pricing-header .description {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2.5rem;
    flex-grow: 1;
}

.pricing-features li {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    color: var(--color-text-main);
    font-size: 0.95rem;
}

.pricing-features li svg {
    color: var(--color-success);
    width: 1.25rem;
    height: 1.25rem;
    margin-right: 0.75rem;
    flex-shrink: 0;
}

/* Social Proof */
.social-proof {
    padding: 4rem 0;
    background: var(--color-white);
    border-top: 1px solid rgba(15, 23, 42, 0.05);
    border-bottom: 1px solid rgba(15, 23, 42, 0.05);
}

.social-title {
    text-align: center;
    color: var(--color-text-light);
    margin-bottom: 2rem;
    font-weight: 500;
}

.logo-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4rem;
    flex-wrap: wrap;
    opacity: 0.8;
}

.logo-item {
    height: 40px;
    display: flex;
    align-items: center;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: all 0.3s ease;
}

.logo-item:hover {
    filter: grayscale(0%);
    opacity: 1;
    transform: scale(1.05);
}

.logo-item svg {
    height: 100%;
    width: auto;
}

/* Footer */
footer {
    background: var(--color-secondary);
    color: var(--color-white);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: #94a3b8;
    max-width: 300px;
}

.footer-socials {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.social-icon {
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.social-icon:hover {
    opacity: 1;
}

.footer-col h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #cbd5e1;
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: #94a3b8;
    font-size: 0.875rem;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
    color: #64748b;
    font-size: 0.875rem;
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.visible {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .bento-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .feature-card.large {
        grid-column: span 2;
    }
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    .pricing-card.popular {
        transform: none;
        order: -1; /* Make popular plan appear first on smaller screens */
        grid-column: span 2;
    }
    .pricing-card.popular:hover {
        transform: translateY(-8px);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }

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

    .hero-text p {
        margin-left: auto;
        margin-right: auto;
    }

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

    .nav-links, .header-actions {
        display: none;
    }

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

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

    .feature-card.large {
        grid-column: span 1;
    }

    .steps-grid {
        flex-direction: column;
        gap: 3rem;
    }

    .step-arrow {
        display: none; /* Hide arrows on mobile */
    }

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

    .pricing-card.popular {
        grid-column: span 1;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* Mobile Menu Overlay */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--color-white);
    z-index: 1001;
    padding: 2rem;
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
    display: flex;
    flex-col: column;
    justify-content: center;
    align-items: center;
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
}

.close-menu-btn {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 2rem;
    color: var(--color-secondary);
}

/* Flash Messages */
.flash-messages-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 1000;
    width: 320px;
}

.flash-message {
    padding: 1rem;
    margin-bottom: 0.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    font-weight: 500;
}

.flash-message.success {
    background-color: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.flash-message.danger {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.flash-message.warning {
    background-color: #fef9c3;
    color: #854d0e;
    border: 1px solid #fde047;
}

.flash-message.info {
    background-color: #dbeafe;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}