/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

:root {
    --primary: #7C3AED;
    --primary-light: #8B5CF6;
    --primary-dark: #6D28D9;
    --secondary: #1E293B;
    --light: #F8FAFC;
    --gray: #64748B;
    --gray-light: #F1F5F9;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --card-bg: #FFFFFF;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.12);
    --radius: 16px;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.1);
}

body {
    background: linear-gradient(135deg, #F9FAFB 0%, #F3F4F6 100%);
    color: var(--secondary);
    min-height: 100vh;
    line-height: 1.6;
    padding: 0;
    overflow-x: hidden;
    opacity: 0;
    animation: fadeInBody 0.8s ease-out forwards;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
}

/* Header */
header {
    padding: 48px 0 32px;
    text-align: center;
    animation: slideDown 0.8s ease-out;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 16px;
}

.logo-icon {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 26px;
    font-weight: 800;
    box-shadow: var(--shadow);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.logo-text {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
    animation: gradientText 3s ease infinite;
    background-size: 200% 200%;
}

@keyframes gradientText {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.tagline {
    color: var(--gray);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto 32px;
    font-weight: 400;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.2s forwards;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Social Buttons */
.social-container {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 24px;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.4s forwards;
}

.social-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--secondary);
    color: white;
    padding: 12px 24px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.social-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: 0.5s;
    z-index: -1;
}

.social-btn:hover::before {
    left: 100%;
}

.social-btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    background: var(--primary);
}

.social-btn i {
    font-size: 1.1rem;
}

/* Main Content */
.main-title {
    text-align: center;
    font-size: 2.25rem;
    margin: 24px 0 48px;
    color: var(--secondary);
    position: relative;
    display: inline-block;
    width: 100%;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.6s forwards;
}

.main-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    border-radius: 2px;
    animation: expandWidth 0.8s ease-out 0.8s forwards;
    transform-origin: left;
    width: 0;
}

@keyframes expandWidth {
    to { width: 120px; }
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 32px;
    margin-bottom: 60px;
}

/* Tool Card */
.tool-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition-smooth);
    height: 100%;
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(0, 0, 0, 0.03);
    opacity: 0;
    transform: translateY(30px);
    animation: cardAppear 0.6s ease-out forwards;
}

@keyframes cardAppear {
    to { opacity: 1; transform: translateY(0); }
}

.tool-card:nth-child(1) { animation-delay: 0.2s; }
.tool-card:nth-child(2) { animation-delay: 0.3s; }
.tool-card:nth-child(3) { animation-delay: 0.4s; }
.tool-card:nth-child(4) { animation-delay: 0.5s; }

.tool-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-hover);
}

.card-header {
    padding: 28px 28px 20px;
    border-bottom: 1px solid var(--gray-light);
    background: linear-gradient(to bottom, rgba(124, 58, 237, 0.03), transparent);
}

.card-header-inner {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.tool-icon {
    width: 64px;
    height: 64px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: white;
    flex-shrink: 0;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
    transition: var(--transition-smooth);
}

.tool-card:hover .tool-icon {
    transform: rotate(10deg) scale(1.1);
}

.passgen-icon {
    background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
}

.calc-icon {
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
}

.launch-icon {
    background: linear-gradient(135deg, #7C3AED 0%, #6D28D9 100%);
}

.api-icon {
    background: linear-gradient(135deg, #3B82F6 0%, #1D4ED8 100%);
}

.tool-title-wrapper {
    flex: 1;
}

.tool-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--secondary);
    transition: var(--transition);
}

.tool-card:hover .tool-title {
    color: var(--primary);
}

.tool-subtitle {
    color: var(--gray);
    font-size: 1rem;
    font-weight: 500;
}

.card-body {
    padding: 24px 28px;
    flex-grow: 1;
}

.tool-description {
    color: var(--secondary);
    line-height: 1.7;
    margin-bottom: 24px;
    font-size: 1rem;
}

.tool-features {
    list-style: none;
    margin-bottom: 20px;
}

.tool-features li {
    padding: 8px 0;
    color: var(--gray);
    display: flex;
    align-items: center;
    font-size: 0.95rem;
    transition: var(--transition);
}

.tool-card:hover .tool-features li {
    transform: translateX(5px);
}

.tool-features li i {
    color: var(--success);
    margin-right: 12px;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.card-footer {
    padding: 0 28px 28px;
    margin-top: auto;
}

.tool-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    text-align: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 16px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.05rem;
    transition: var(--transition-smooth);
    border: none;
    cursor: pointer;
    letter-spacing: 0.3px;
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.25);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.tool-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: 0.5s;
    z-index: -1;
}

.tool-btn:hover::before {
    left: 100%;
}

.tool-btn:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 6px 18px rgba(124, 58, 237, 0.35);
}

/* Disclaimer Sections */
.disclaimer-container {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin: 60px 0 40px;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.7s forwards;
}

.disclaimer-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
    border-left: 4px solid;
    transition: var(--transition);
}

.disclaimer-card:hover {
    transform: translateY(-5px);
}

.disclaimer-card.warning {
    border-left-color: var(--warning);
    background: linear-gradient(to right, rgba(245, 158, 11, 0.03), transparent);
}

.disclaimer-card.info {
    border-left-color: var(--primary);
    background: linear-gradient(to right, rgba(124, 58, 237, 0.03), transparent);
}

.disclaimer-title {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--secondary);
    font-size: 1.4rem;
    margin-bottom: 16px;
}

.disclaimer-title i {
    font-size: 1.3rem;
}

.warning .disclaimer-title i {
    color: var(--warning);
}

.info .disclaimer-title i {
    color: var(--primary);
}

.disclaimer-text {
    color: var(--secondary);
    line-height: 1.7;
    margin-bottom: 12px;
    font-size: 1rem;
}

.disclaimer-text:last-child {
    margin-bottom: 0;
}

.highlight {
    background: rgba(124, 58, 237, 0.08);
    padding: 4px 8px;
    border-radius: 4px;
    font-weight: 600;
    color: var(--primary-dark);
}

/* Footer */
footer {
    text-align: center;
    padding: 32px 0;
    color: var(--gray);
    font-size: 0.95rem;
    border-top: 1px solid var(--gray-light);
    margin-top: 40px;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.8s forwards;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--gray);
    text-decoration: none;
    transition: var(--transition-smooth);
    position: relative;
    padding: 5px 10px;
    border-radius: 4px;
}

.footer-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

.footer-links a:hover::after {
    width: 100%;
}

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

/* Floating particles */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(124, 58, 237, 0.1);
    animation: float 15s infinite linear;
}

@keyframes float {
    0% { transform: translateY(0) rotate(0deg); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-100vh) rotate(360deg); opacity: 0; }
}

/* Responsive */
@media (max-width: 992px) {
    .tools-grid {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        gap: 28px;
    }
}

@media (max-width: 768px) {
    header {
        padding: 40px 0 28px;
    }
    
    .logo-text {
        font-size: 2.5rem;
    }
    
    .tagline {
        font-size: 1.05rem;
        padding: 0 16px;
    }
    
    .main-title {
        font-size: 2rem;
        margin: 20px 0 40px;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .card-header-inner {
        gap: 16px;
    }
    
    .tool-icon {
        width: 56px;
        height: 56px;
        font-size: 24px;
    }
    
    .tool-title {
        font-size: 1.6rem;
    }
    
    .social-container {
        flex-wrap: wrap;
    }
    
    .disclaimer-container {
        margin: 48px 0 32px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 20px;
    }
    
    header {
        padding: 32px 0 24px;
    }
    
    .logo-container {
        flex-direction: column;
        gap: 12px;
    }
    
    .logo-text {
        font-size: 2.2rem;
    }
    
    .social-btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .card-header,
    .card-body,
    .card-footer {
        padding-left: 24px;
        padding-right: 24px;
    }
    
    .card-header {
        padding-top: 24px;
        padding-bottom: 20px;
    }
    
    .card-footer {
        padding-bottom: 24px;
    }
    
    .disclaimer-card {
        padding: 24px;
    }
}