/* ===========================
   DESIGN SYSTEM
   =========================== */

:root {
    /* Primary Colors - Centsible Financial Blue */
    --primary: #1e40af;
    --primary-light: #3b82f6;
    --primary-lighter: #60a5fa;

    /* Secondary Colors */
    --accent: #06b6d4;
    --success: #10b981;

    /* Neutrals */
    --white: #ffffff;
    --light: #f8fafc;
    --light-gray: #f1f5f9;
    --gray: #e2e8f0;
    --gray-medium: #94a3b8;
    --gray-dark: #475569;
    --dark: #1e293b;
    --darker: #0f172a;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;

    /* Shadows */
    --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);

    /* Transitions */
    --transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

body.dark-mode {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family:
        "Outfit",
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition:
        background-color var(--transition),
        color var(--transition);
}

body.dark-mode {
    background: var(--bg-primary);
    color: var(--text-primary);
}

/* ===========================
   TYPOGRAPHY
   =========================== */

h1,
h2,
h3,
h4,
h5,
h6 {
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

h1 {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
}

h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.75;
}

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

a:hover {
    color: var(--primary-light);
}

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

/* ===========================
   NAVIGATION
   =========================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray);
    z-index: 1000;
    padding: var(--spacing-md) 0;
    box-shadow: var(--shadow-sm);
    transition:
        background-color var(--transition),
        border-color var(--transition);
}

body.dark-mode .navbar {
    background: rgba(15, 23, 42, 0.95);
    border-bottom-color: rgba(100, 116, 139, 0.3);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    cursor: pointer;
    transition: transform var(--transition);
}

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

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

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

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

.nav-link {
    color: var(--text-primary);
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    border-bottom: 2px solid transparent;
    transition: all var(--transition);
}

.nav-link:hover {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.dark-mode-btn {
    background: none;
    border: none;
    color: var(--primary);
    font-size: 1.25rem;
    cursor: pointer;
    transition: color var(--transition);
    padding: var(--spacing-xs);
    display: flex;
    align-items: center;
}

.dark-mode-btn:hover {
    color: var(--primary-light);
}

/* ===========================
   HERO SECTION
   =========================== */

.hero {
    margin-top: 70px;
    background: linear-gradient(
        135deg,
        var(--primary) 0%,
        var(--primary-light) 100%
    );
    color: var(--white);
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    filter: blur(80px);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero-logo-section {
    margin-bottom: var(--spacing-xl);
    animation: slideDown 0.6s ease-out;
}

.hero-logo {
    width: 140px;
    height: 140px;
    object-fit: contain;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.2));
}

.hero h1 {
    color: var(--white);
    font-size: 3.5rem;
    margin-bottom: var(--spacing-sm);
    animation: slideUp 0.6s ease-out 0.1s both;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-lg);
    animation: slideUp 0.6s ease-out 0.2s both;
}

.hero-description {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    line-height: 1.8;
    animation: slideUp 0.6s ease-out 0.3s both;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===========================
   SECTIONS
   =========================== */

section {
    padding: var(--spacing-3xl) var(--spacing-lg);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
    margin-bottom: var(--spacing-md);
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* ===========================
   FEATURES SECTION
   =========================== */

.features-section {
    background: var(--light);
    transition: background-color var(--transition);
}

body.dark-mode .features-section {
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.feature-item {
    background: var(--white);
    padding: var(--spacing-2xl) var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition);
    text-align: center;
    border-top: 4px solid transparent;
}

body.dark-mode .feature-item {
    background: var(--bg-primary);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.feature-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-top-color: var(--primary);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
    margin: 0 auto var(--spacing-lg);
}

.feature-item h3 {
    margin-bottom: var(--spacing-sm);
}

/* ===========================
   HOW IT WORKS SECTION
   =========================== */

.how-it-works {
    background: var(--white);
}

body.dark-mode .how-it-works {
    background: var(--bg-primary);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-2xl);
}

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

.step::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 50%;
    z-index: 0;
}

.step-number {
    position: relative;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 50%;
    color: var(--white);
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
}

.step h3 {
    margin-bottom: var(--spacing-sm);
}

.step p {
    color: var(--gray-dark);
}

/* ===========================
   BENEFITS SECTION
   =========================== */

.benefits-section {
    background: var(--light);
    transition: background-color var(--transition);
}

body.dark-mode .benefits-section {
    background: var(--bg-secondary);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.benefit-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    border-left: 4px solid var(--primary);
}

body.dark-mode .benefit-card {
    background: var(--bg-primary);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.benefit-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(8px);
}

.benefit-card h3 {
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.benefit-card p {
    color: var(--text-secondary);
}

/* ===========================
   KEY BENEFITS SECTION
   =========================== */

.key-benefits {
    background: var(--white);
    transition: background-color var(--transition);
}

body.dark-mode .key-benefits {
    background: var(--bg-primary);
}

.benefits-list {
    display: grid;
    gap: var(--spacing-xl);
    max-width: 800px;
    margin: 0 auto;
}

.benefit-row {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--light);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}

body.dark-mode .benefit-row {
    background: var(--bg-secondary);
}

.benefit-row:hover {
    background: rgba(30, 64, 175, 0.05);
    transform: translateX(8px);
}

.benefit-icon {
    flex-shrink: 0;
    color: var(--primary);
    font-size: 1.75rem;
}

.benefit-content h3 {
    color: var(--primary);
    margin-bottom: var(--spacing-xs);
}

.benefit-content p {
    color: var(--text-secondary);
    margin: 0;
}

/* ===========================
   TEAM SECTION
   =========================== */

.team-section {
    background: var(--light);
    transition: background-color var(--transition);
}

body.dark-mode .team-section {
    background: var(--bg-secondary);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.team-card {
    background: var(--white);
    padding: var(--spacing-2xl) var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all var(--transition);
    border-top: 4px solid transparent;
}

body.dark-mode .team-card {
    background: var(--bg-primary);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.team-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-top-color: var(--primary);
}

.team-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
    margin: 0 auto var(--spacing-lg);
}

.team-card h3 {
    margin-bottom: var(--spacing-xs);
}

.role {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
}

.bio {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===========================
   FOOTER
   =========================== */

.footer {
    background: var(--darker);
    color: var(--white);
    padding: var(--spacing-2xl) var(--spacing-lg);
    transition: background-color var(--transition);
}

body.dark-mode .footer {
    background: #000000;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-col h4 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    font-size: 1.05rem;
}

.footer-col p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    margin: 0;
}

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

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

.footer-col a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition);
}

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

.footer-logo {
    width: 50px;
    height: 50px;
    object-fit: contain;
    margin-bottom: var(--spacing-md);
}

.footer-logo-link {
    display: inline-block;
    cursor: pointer;
    transition: transform var(--transition);
}

.footer-logo-link:hover {
    transform: scale(1.1);
}

.footer-bottom {
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* ===========================
   RESPONSIVE DESIGN
   =========================== */

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    h3 {
        font-size: 1.25rem;
    }

    .navbar {
        padding: var(--spacing-md);
    }

    .nav-menu {
        display: none;
    }

    .hero {
        margin-top: 60px;
        padding: var(--spacing-2xl) var(--spacing-lg);
    }

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

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .hero-logo {
        width: 100px;
        height: 100px;
    }

    .hero-description {
        font-size: 1rem;
    }

    section {
        padding: var(--spacing-2xl) var(--spacing-lg);
    }

    .section-header {
        margin-bottom: var(--spacing-2xl);
    }

    .features-grid,
    .steps-grid,
    .benefits-grid,
    .team-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .step::before {
        width: 80px;
        height: 80px;
    }

    .step-number {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

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

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

    .hero-logo {
        width: 80px;
        height: 80px;
    }

    section {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .feature-item,
    .benefit-card,
    .team-card {
        padding: var(--spacing-lg);
    }

    .benefit-row {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .benefit-icon {
        order: -1;
    }
}