/* ===================================
   ALTERNATE AI TOOL - CSS STYLES
   Inspired by ProductHunt Design
   Color Palette: Black, White, Yellow, Green
   =================================== */

/* CSS Variables */
:root {
    --color-black: #000000;
    --color-white: #FFFFFF;
    --color-yellow: #FFD700;
    --color-green: #00C853;
    --color-gray-light: #F5F5F5;
    --color-gray-medium: #E0E0E0;
    --color-gray-dark: #333333;
    --color-border: #E0E0E0;
    --color-shadow: rgba(0, 0, 0, 0.1);
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --transition: all 0.3s ease;
    --border-radius: 8px;
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-white);
    color: var(--color-gray-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Header Styles */
.header {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px var(--color-shadow);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo {
    width: 100px;
    height: 80px;
    object-fit: contain;
}

.site-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-black);
    letter-spacing: -0.5px;
}

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

.nav-link {
    color: var(--color-gray-dark);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--color-black);
}

.btn-primary {
    background-color: var(--color-black);
    color: var(--color-white);
    border: none;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary:hover {
    background-color: var(--color-gray-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--color-shadow);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--color-gray-light) 0%, var(--color-white) 100%);
    padding: var(--spacing-xl) 0;
}

.hero-banner {
    margin-bottom: var(--spacing-lg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 8px 24px var(--color-shadow);
}

.banner-image {
    width: 100%;
    height: auto;
    display: block;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    color: var(--color-black);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-lg);
    line-height: 1.5;
}

.hero-search {
    position: relative;
    max-width: 600px;
    margin: 0 auto var(--spacing-md);
}

.search-icon {
    position: absolute;
    left: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-gray-dark);
    width: 20px;
    height: 20px;
}

.search-input {
    width: 100%;
    padding: 14px 14px 14px 48px;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-black);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

.hero-filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 20px;
    border: 2px solid var(--color-border);
    background-color: var(--color-white);
    color: var(--color-gray-dark);
    border-radius: 24px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover {
    border-color: var(--color-black);
    background-color: var(--color-gray-light);
}

.filter-btn.active {
    background-color: var(--color-black);
    color: var(--color-white);
    border-color: var(--color-black);
}

/* Main Content */
.main {
    padding: var(--spacing-xl) 0;
}

.tools-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-black);
}

.sort-options {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.sort-select {
    padding: 8px 16px;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: 14px;
    cursor: pointer;
    background-color: var(--color-white);
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

.tool-card {
    background-color: var(--color-white);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    transition: var(--transition);
    cursor: pointer;
}

.tool-card:hover {
    border-color: var(--color-black);
    box-shadow: 0 8px 24px var(--color-shadow);
    transform: translateY(-4px);
}

.tool-card.featured {
    border-color: var(--color-yellow);
    background: linear-gradient(135deg, #FFFEF0 0%, var(--color-white) 100%);
    position: relative;
}

.tool-card.featured::before {
    content: "⭐ FEATURED";
    position: absolute;
    top: -12px;
    left: var(--spacing-md);
    background-color: var(--color-yellow);
    color: var(--color-black);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 700;
}

.tool-screenshot {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
}

.tool-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
}

.tool-info {
    flex: 1;
}

.tool-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: 4px;
}

.tool-category {
    font-size: 14px;
    color: var(--color-gray-dark);
    font-weight: 500;
}

.tool-rating {
    display: flex;
    align-items: center;
    gap: 4px;
}

.rating-stars {
    color: var(--color-yellow);
    font-size: 18px;
}

.rating-number {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-black);
}

.tool-description {
    font-size: 14px;
    color: var(--color-gray-dark);
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.tool-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-sm);
}

.tool-tag {
    background-color: var(--color-gray-light);
    color: var(--color-gray-dark);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.tool-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
}

.tool-comments-count {
    font-size: 14px;
    color: var(--color-gray-dark);
    display: flex;
    align-items: center;
    gap: 4px;
}

.tool-link {
    color: var(--color-green);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: var(--transition);
}

.tool-link:hover {
    color: #00A043;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.modal.active {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: var(--spacing-xl);
}

.modal-content {
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    max-width: 900px;
    width: 100%;
    position: relative;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.modal-close {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition);
}

.modal-close:hover {
    background-color: var(--color-gray-light);
}

.modal-tool-header {
    margin-bottom: var(--spacing-md);
}

.modal-tool-name {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: var(--spacing-xs);
}

.modal-tool-meta {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.modal-screenshot {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.modal-tool-description {
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-md);
}

.modal-tool-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background-color: var(--color-green);
    color: var(--color-white);
    padding: 12px 24px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    margin-bottom: var(--spacing-lg);
}

.modal-tool-link:hover {
    background-color: #00A043;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 200, 83, 0.3);
}

.comments-section {
    border-top: 2px solid var(--color-border);
    padding-top: var(--spacing-md);
}

.comments-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
}

.comment {
    background-color: var(--color-gray-light);
    border-radius: var(--border-radius);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.comment-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.comment-avatar {
    font-size: 24px;
}

.comment-user {
    font-weight: 600;
    color: var(--color-black);
}

.comment-location {
    font-size: 14px;
    color: var(--color-gray-dark);
}

.comment-text {
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-gray-dark);
}

/* About Section */
.about {
    background-color: var(--color-gray-light);
    padding: var(--spacing-xl) 0;
}

.about-text {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-md);
    max-width: 800px;
}

/* Footer */
.footer {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-title {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.footer-text {
    font-size: 14px;
    color: var(--color-gray-medium);
}

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

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: var(--color-gray-medium);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-dark);
    color: var(--color-gray-medium);
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .header-content {
        flex-direction: column;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm) 0;
    }
    
    .logo-section {
        width: 100%;
        justify-content: center;
    }
    
    .logo {
        width: 80px;
        height: 64px;
    }
    
    .site-title {
        font-size: 18px;
    }
    
    .nav {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .nav-link {
        font-size: 14px;
    }
    
    .btn-primary {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    .tools-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .sort-options {
        width: 100%;
    }
    
    .sort-select {
        flex: 1;
    }
    
    .hero {
        padding: var(--spacing-md) 0;
    }
    
    .hero-banner {
        margin-bottom: var(--spacing-md);
    }
    
    .hero-filters {
        gap: var(--spacing-xs);
    }
    
    .filter-btn {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 24px;
        letter-spacing: -0.5px;
    }
    
    .hero-subtitle {
        font-size: 14px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .modal-content {
        padding: var(--spacing-sm);
        margin: var(--spacing-sm);
    }
    
    .modal-tool-name {
        font-size: 24px;
    }
    
    .logo {
        width: 60px;
        height: 48px;
    }
    
    .site-title {
        font-size: 16px;
    }
    
    .tool-card {
        padding: var(--spacing-sm);
    }
    
    .tool-name {
        font-size: 18px;
    }
    
    .tool-screenshot {
        height: 180px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .hero-search {
        margin: 0 auto var(--spacing-sm);
    }
    
    .search-input {
        padding: 12px 12px 12px 44px;
        font-size: 14px;
    }
    
    .filter-btn {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    .nav {
        gap: var(--spacing-sm);
    }
}

@media (max-width: 360px) {
    .hero-title {
        font-size: 20px;
    }
    
    .section-title {
        font-size: 20px;
    }
    
    .logo {
        width: 50px;
        height: 40px;
    }
    
    .site-title {
        font-size: 14px;
    }
    
    .tool-screenshot {
        height: 150px;
    }
    
    .btn-primary {
        padding: 6px 12px;
        font-size: 12px;
    }
}

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

.tool-card {
    animation: fadeIn 0.5s ease-out;
}

/* Print Styles */
@media print {
    .header,
    .hero,
    .footer,
    .modal {
        display: none;
    }
}