/* Main Stylesheet for OptiCRM */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');
@import './variables.css';

/* 1. Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

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

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

/* 2. Utilities */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.grid { display: grid; }
.gap-4 { gap: var(--space-4); }
.gap-8 { gap: var(--space-8); }

.text-center { text-align: center; }
.w-full { width: 100%; }

.section-padding {
    padding: var(--space-24) 0;
}

/* 3. Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    color: var(--color-text-primary);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }

p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
}

.subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-8);
}

/* 4. Components */
/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-base);
    font-size: 0.95rem;
}

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

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    background-color: #000; /* Darker black on hover if light mode */
}

[data-theme="dark"] .btn-primary {
    background-color: var(--color-surface); /* White on dark */
    color: var(--color-bg-primary);
}

.btn-secondary {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

.btn-secondary:hover {
    background-color: var(--color-border);
}

/* Cards */
.card {
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    transition: var(--transition-base);
}

.card:hover {
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/* Badge */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--space-4);
}

/* Inputs */
.input-group {
    display: flex;
    gap: var(--space-2);
}

.input-field {
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    outline: none;
    transition: var(--transition-base);
    min-width: 250px;
}

.input-field:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* 5. Header / Nav */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    height: 70px;
    display: flex;
    align-items: center;
}

.nav-links {
    display: flex;
    gap: var(--space-8);
    list-style: none;
}

.nav-item {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

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

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--color-primary), #a855f7);
    border-radius: 6px;
}

/* 6. Hero Section */
.hero {
    padding-top: calc(70px + var(--space-16));
    padding-bottom: var(--space-24);
    text-align: center;
    overflow: hidden;
}

.hero-visual {
    margin-top: var(--space-16);
    background-color: var(--color-bg-tertiary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    overflow: hidden;
    position: relative;
    max-width: 1000px;
    margin-inline: auto;
    aspect-ratio: 16/9; /* Box for the screenshot */
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-visual-placeholder-text {
    color: var(--color-text-tertiary);
    font-weight: 500;
}

/* 7. Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-6);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background-color: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-4);
    color: var(--color-primary);
}

/* 8. Bento Grid (for advanced layout) */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: minmax(300px, auto);
    gap: var(--space-6);
}

.bento-item {
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    position: relative;
    overflow: hidden;
}

.bento-item.span-2 { grid-column: span 2; }

/* 9. Footer */
.footer {
    border-top: 1px solid var(--color-border);
    padding: var(--space-12) 0;
    background-color: var(--color-bg-secondary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-8);
}

.footer-links {
    display: flex;
    gap: var(--space-8);
}

.copyright {
    color: var(--color-text-tertiary);
    font-size: 0.875rem;
    margin-top: var(--space-8);
}

/* 10. Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}

/* Responsive */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .nav-links { display: none; } /* TODO: Mobile Menu */
    .bento-grid { grid-template-columns: 1fr; }
    .bento-item.span-2 { grid-column: span 1; }
    .footer-content { flex-direction: column; }
}