@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    --bg-color: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --primary: #4f46e5; /* Indigo */
    --primary-hover: #4338ca;
    --accent: #84cc16; /* Lime Green */
    --accent-dark: #65a30d;
    --card-bg: #f8fafc;
    --border-color: #e2e8f0;
    --font-sans: 'Inter', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Nav */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 20px;
    font-weight: 800;
    text-decoration: none;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo span {
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 16px;
    align-items: center;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    transition: color 0.3s;
}

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

.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 13px;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

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

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

.btn-accent:hover {
    background: var(--accent-dark);
    transform: translateY(-1px);
}

.btn-outline {
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    background: transparent;
}

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

/* Hero Section */
.hero {
    padding: 80px 0;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.hero-text h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-text p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

/* Image Placeholder Style */
.placeholder-img {
    background: #f8fafc;
    border: 2px dashed #cbd5e1;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: var(--text-secondary);
    text-align: center;
    padding: 20px;
    min-height: 300px;
}

.placeholder-img .size {
    font-size: 12px;
    margin-top: 8px;
    opacity: 0.6;
}

/* Grids and Cards */
.section {
    padding: 80px 0;
    border-top: 1px solid var(--border-color);
}

.section-tag {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--primary);
    margin-bottom: 12px;
    display: block;
}

.section-title {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 40px;
    letter-spacing: -0.5px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    transition: all 0.3s;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.03);
    border-color: var(--accent);
}

.card-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
}

.card-desc {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Login/Register Forms */
.auth-container {
    max-width: 450px;
    margin: 80px auto;
    padding: 40px;
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.auth-title {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 24px;
    text-align: center;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.auth-form input {
    width: 100%;
    padding: 10px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: #fff;
}

/* Footer */
footer {
    background: #f8fafc;
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
}

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

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    transition: color 0.3s;
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    font-size: 13px;
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 992px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-text p {
        margin: 0 auto 32px;
    }
    .hero-actions {
        justify-content: center;
    }
    .grid-3 {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .grid-3 {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
}