:root {
    /* Light Mode Colors */
    --blue-primary: #0A3D91;
    --yellow-accent: #FFC107;
    --white-base: #FFFFFF;
    --blue-dark: #001F4D;
    --text-primary: #001F4D;
    --text-secondary: #666;
    --background: #FFFFFF;
    --card-bg: #FFFFFF;
    --card-border: #f0f0f0;
    --nav-bg: rgba(255, 255, 255, 0.8);

    /* Shared */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --shadow-soft: 0 8px 32px 0 rgba(10, 61, 145, 0.1);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    
    /* Spacing */
    --section-padding: 100px 20px;
    --border-radius-lg: 24px;
    --border-radius-md: 16px;
    --border-radius-sm: 8px;
}

body.dark-mode {
    /* Dark Mode Colors */
    --blue-primary: #FFC107; /* Yellow becomes primary accent */
    --yellow-accent: #0A3D91; /* Blue becomes secondary */
    --white-base: #001F4D;
    --blue-dark: #FFFFFF;
    --text-primary: #FFFFFF;
    --text-secondary: #a0aec0;
    --background: #001F4D;
    --card-bg: #0A3D91;
    --card-border: #1d3a6e;
    --nav-bg: rgba(10, 61, 145, 0.8);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s, color 0.3s;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes glowPulse {
    0% { box-shadow: 0 0 5px var(--yellow-accent); }
    50% { box-shadow: 0 0 20px var(--yellow-accent); }
    100% { box-shadow: 0 0 5px var(--yellow-accent); }
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Glassmorphism */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-soft);
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    height: 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 5%;
    background: #f0f2f5;
    z-index: 1000;
    border-bottom: 1px solid #e5e5e5;
    transition: background-color 0.3s;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--blue-primary);
    letter-spacing: -1.5px;
    text-transform: uppercase;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.nav-links {
    display: flex;
    gap: 40px;
    list-style: none;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-links a {
    text-decoration: none;
    color: #606770;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--yellow-accent);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: radial-gradient(circle at top right, var(--background), var(--background));
    padding: 0 20px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(10, 61, 145, 0.05) 0%, transparent 70%);
    top: -200px;
    right: -100px;
    z-index: 0;
}

.hero-content {
    max-width: 900px;
    z-index: 1;
}

.hero h1 {
    font-size: 4.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--blue-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -2px;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    padding: 16px 32px;
    border-radius: 40px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    cursor: pointer;
}

.btn-primary {
    background: var(--blue-primary);
    color: var(--white-base);
    box-shadow: 0 10px 20px rgba(10, 61, 145, 0.2);
}

.btn-primary:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(10, 61, 145, 0.3);
    background: var(--blue-dark);
}

/* Sections */
section {
    padding: var(--section-padding);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 60px;
    color: var(--text-primary);
}

.section-title span {
    color: var(--yellow-accent);
}

/* Cards */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.card {
    padding: 40px;
    background: var(--card-bg);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--card-border);
    transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
    border-color: var(--yellow-accent);
}

.card i {
    font-size: 2.5rem;
    color: var(--blue-primary);
    margin-bottom: 20px;
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.btn-outline {
    border: 1.5px solid var(--blue-primary);
    color: var(--blue-primary);
    background: transparent;
    padding: 8px 16px;
    font-size: 0.85rem;
    margin-right: 10px;
}

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

.nav-actions {
    display: flex;
    align-items: center;
}

.login-container {
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    background: radial-gradient(circle at top right, var(--background), var(--background));
}

.login-card {
    width: 100%;
    max-width: 450px;
    padding: 50px;
    text-align: center;
    border: 1px solid var(--card-border);
    box-shadow: 0 20px 60px rgba(0,0,0,0.08);
}

.login-tabs {
    display: flex;
    margin-bottom: 30px;
    background: rgba(0,0,0,0.04);
    border-radius: 12px;
    padding: 6px;
    border: 1px solid var(--card-border);
}

.login-tab {
    flex: 1;
    padding: 12px;
    cursor: pointer;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.85rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.login-tab.active {
    background: var(--white-base);
    color: var(--blue-primary);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

body.dark-mode .login-tabs {
    background: rgba(255,255,255,0.05);
}

body.dark-mode .login-tab.active {
    background: var(--blue-primary);
    color: var(--white-base);
}

.login-form-group {
    text-align: left;
    margin-bottom: 20px;
}

.login-form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.login-form-group input {
    width: 100%;
    padding: 14px 18px;
    border-radius: 12px;
    border: 1px solid var(--card-border);
    background: var(--background);
    color: var(--text-primary);
    outline: none;
    transition: all 0.3s;
    font-size: 0.95rem;
}

.login-form-group input:focus {
    border-color: var(--blue-primary);
    box-shadow: 0 0 0 4px rgba(10, 61, 145, 0.1);
}

.login-form-group div i {
    transition: color 0.3s;
}

.login-form-group input:focus + i {
    color: var(--blue-primary) !important;
}

.feedback-message {
    animation: slideDown 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Register Page Styles */
.register-container {
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
}

.register-card {
    width: 100%;
    max-width: 600px;
    padding: 50px;
}

.step-indicator {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
    position: relative;
}

.step-indicator::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--card-border);
    transform: translateY(-50%);
    z-index: 0;
}

.step {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--white-base);
    border: 2px solid var(--card-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    z-index: 1;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--text-secondary);
}

.step.active {
    border-color: var(--blue-primary);
    color: var(--blue-primary);
    box-shadow: 0 0 0 4px rgba(10, 61, 145, 0.1);
}

.step.completed {
    background: var(--blue-primary);
    border-color: var(--blue-primary);
    color: white;
}

.register-step-content {
    display: none;
    animation: fadeIn 0.5s ease;
}

.register-step-content.active {
    display: block;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 500px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* Dashboard Styles */
.dashboard-body {
    background: #f8fafc;
}

/* Footer */
footer {
    background: var(--background);
    color: var(--text-secondary);
    padding: 80px 5% 40px;
    border-top: 1px solid var(--card-border);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-section h4 {
    margin-bottom: 25px;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.footer-section p, .footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    display: block;
    margin-bottom: 12px;
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    margin-top: 40px;
    border-top: 1px solid var(--card-border);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 3rem;
    }
    
    .nav-links {
        display: none;
    }
    
    section {
        padding: 60px 20px;
    }
}

/* Theme-toggle button */
.theme-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-shadow: var(--shadow-soft);
    z-index: 1001;
    transition: all 0.3s;
}

.theme-toggle:hover {
    transform: scale(1.1);
}

.theme-toggle .lucide-sun {
    display: none;
}

body.dark-mode .theme-toggle .lucide-sun {
    display: block;
}

body.dark-mode .theme-toggle .lucide-moon {
    display: none;
}