/* ==========================================
   INVEST INTELLIGENTLY - MAIN STYLES
   Modern SaaS Fintech Design
   ========================================== */

/* ==========================================
   CSS VARIABLES - COLOR PALETTE
   ========================================== */
:root {
    /* Primary Blues */
    --primary-blue: #2B5F9E;
    --secondary-blue: #1A4068;
    --light-blue: #E8F1F8;
    --medium-blue: #4A7AB8;

    /* Accent Orange (Complementary) */
    --accent-orange: #FF8C42;
    --light-orange: #FFD4B8;
    --dark-orange: #E67328;

    /* Neutrals */
    --white: #FFFFFF;
    --off-white: #F8F9FA;
    --light-gray: #E9ECEF;
    --medium-gray: #6C757D;
    --dark-gray: #333333;
    --text-primary: #212529;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #2B5F9E 0%, #1A4068 100%);
    --gradient-light: linear-gradient(135deg, #E8F1F8 0%, #FFFFFF 100%);
    --gradient-hero: linear-gradient(135deg, rgba(26, 64, 104, 0.95) 0%, rgba(43, 95, 158, 0.9) 100%);

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.2);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;

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

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-heading: 'Poppins', var(--font-primary);
}

/* ==========================================
   RESET & BASE STYLES
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    background-color: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==========================================
   TYPOGRAPHY
   ========================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--secondary-blue);
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 3.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.75rem;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 2rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--dark-gray);
    font-size: 1.125rem;
}

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

a:hover {
    color: var(--accent-orange);
}

/* ==========================================
   LAYOUT CONTAINERS
   ========================================== */
.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

.content-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 1rem 2rem;
    min-height: 48px;
    font-size: 1.125rem;
    font-weight: 600;
    text-align: center;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-medium);
    border: none;
    text-decoration: none;
    font-family: var(--font-primary);
}

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

.btn-primary:hover {
    background: var(--dark-orange);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--white);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-secondary:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    min-height: 56px;
    font-size: 1.25rem;
}

/* ==========================================
   NAVIGATION HEADER
   ========================================== */
.main-header {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all var(--transition-medium);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-placeholder {
    height: 50px;
    width: auto;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--secondary-blue);
    font-family: var(--font-heading);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu li a {
    font-size: 1rem;
    font-weight: 500;
    color: var(--dark-gray);
    transition: color var(--transition-fast);
    padding: 0.5rem 1rem;
    border-radius: 4px;
}

.nav-menu li a:hover {
    color: var(--primary-blue);
    background: var(--light-blue);
}

.nav-cta {
    background: var(--accent-orange) !important;
    color: var(--white) !important;
    padding: 0.75rem 1.5rem !important;
    border-radius: 8px;
    font-weight: 600;
}

.nav-cta:hover {
    background: var(--dark-orange) !important;
    transform: translateY(-2px);
}

/* Mobile Menu Backdrop */
.mobile-menu-backdrop {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.mobile-menu-backdrop.active {
    opacity: 1;
}

/* Mobile Menu Toggle Button */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.hamburger-line {
    width: 100%;
    height: 3px;
    background: var(--primary-blue);
    border-radius: 2px;
    transition: all var(--transition-medium);
}

.mobile-menu-toggle:hover .hamburger-line {
    background: var(--accent-orange);
}

/* Hamburger Animation - Open State */
.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

/* ==========================================
   SECTION TITLES
   ========================================== */
.section-title {
    text-align: center;
    margin-bottom: var(--spacing-md);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--accent-orange);
    margin: 1rem auto 0;
    border-radius: 2px;
}

.section-intro {
    text-align: center;
    font-size: 1.25rem;
    color: var(--medium-gray);
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
}

/* ==========================================
   CARDS
   ========================================== */
.card {
    background: var(--white);
    border-radius: 12px;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-medium);
}

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

/* ==========================================
   IMAGE PLACEHOLDERS
   ========================================== */
.image-placeholder {
    background: var(--light-blue);
    border: 2px dashed var(--primary-blue);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--medium-gray);
    font-size: 1rem;
    padding: var(--spacing-md);
}

.icon-placeholder {
    width: 80px;
    height: 80px;
    background: var(--light-blue);
    border: 2px dashed var(--primary-blue);
    border-radius: 50%;
    margin: 0 auto var(--spacing-sm);
}

/* ==========================================
   RESPONSIVE IMAGES
   ========================================== */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

.hero-image img,
.feature-image img {
    width: 100%;
    height: auto;
}

.stat-icon img {
    max-width: 80px;
    height: auto;
    margin: 0 auto;
}

/* ==========================================
   FOOTER
   ========================================== */
.main-footer {
    background: var(--secondary-blue);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    margin-top: var(--spacing-xxl);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-column h4 {
    color: var(--white);
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
}

.footer-column p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
}

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

.footer-domain {
    color: var(--accent-orange) !important;
    font-weight: 600;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: var(--spacing-md);
    text-align: center;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.disclaimer {
    font-size: 0.75rem !important;
    font-style: italic;
}

/* ==========================================
   UTILITIES
   ========================================== */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

/* ==========================================
   RESPONSIVE DESIGN - TABLET
   ========================================== */
@media (max-width: 992px) {
    html {
        font-size: 15px;
    }

    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .nav-menu {
        gap: 1rem;
    }

    .section-container {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
}

/* ==========================================
   RESPONSIVE DESIGN - MOBILE
   ========================================== */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    /* Mobile Navigation */
    .nav-container {
        padding: 0.75rem var(--spacing-sm);
    }

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

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

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 75vw;
        max-width: 320px;
        max-height: 100vh;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        align-items: flex-start;
        padding: 90px 1.5rem 1.5rem;
        box-shadow: var(--shadow-xl);
        transition: right var(--transition-medium);
        z-index: 1000;
        gap: 0;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid var(--light-gray);
    }

    .nav-menu li a {
        display: block;
        width: 100%;
        padding: 1rem;
        font-size: 1.125rem;
    }

    .nav-cta {
        margin-top: var(--spacing-sm);
        text-align: center;
    }

    .logo-section {
        gap: 0.5rem;
    }

    .logo-placeholder,
    .logo-ii {
        height: 40px;
        max-width: 120px;
    }

    .logo-text {
        font-size: 1rem;
    }

    /* Mobile-specific image sizing */
    .stat-icon img {
        max-width: 60px;
        margin: 0 auto;
    }

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

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

    .footer-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        min-height: 48px;
    }
}

/* ==========================================
   RESPONSIVE DESIGN - SMALL MOBILE
   ========================================== */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .logo-text {
        font-size: 0.875rem;
    }

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