/* Social24.online - Main Stylesheet */
/* Blue Theme with Modern, Lightweight Design */

:root {
    --primary-blue: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-blue: #60a5fa;
    --accent-blue: #93c5fd;
    --bg-color: #f8fafc;
    --bg-dark: #1e293b;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --white: #ffffff;
    --border-color: #e2e8f0;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
}

/* Reset Timer */
.reset-timer {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark));
    color: var(--white);
    padding: 0.5rem;
    text-align: center;
    font-weight: 600;
    font-size: 0.875rem;
    z-index: 9999;
    box-shadow: var(--shadow-md);
}

.reset-timer i {
    margin-right: 0.5rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Landing Page */
.landing-page {
    padding-top: 2.5rem;
}

.landing-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.landing-header {
    text-align: center;
    margin-bottom: 3rem;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.logo i {
    font-size: 3rem;
    color: var(--primary-blue);
}

.logo h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.125rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Welcome Section */
.welcome-section {
    text-align: center;
    margin-bottom: 2.5rem;
}

.welcome-section h2 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.intro-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto;
}

/* Features Section */
.features-section {
    margin-bottom: 2.5rem;
}

.features-section h3 {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.feature-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-blue);
}

.feature-card i {
    font-size: 2rem;
    color: var(--primary-blue);
    margin-bottom: 0.75rem;
}

.feature-card h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.feature-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Rewards Section */
.rewards-section {
    margin-bottom: 2.5rem;
}

.rewards-banner {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-light));
    color: var(--white);
    padding: 2rem;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    box-shadow: var(--shadow-lg);
}

.rewards-banner i {
    font-size: 3rem;
    opacity: 0.9;
}

.rewards-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.rewards-content p {
    font-size: 1rem;
    opacity: 0.95;
    margin-bottom: 1rem;
}

.rewards-targets {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.target-item {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

/* Sign In Section */
.signin-section {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.signin-section h3 {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.signin-form {
    max-width: 500px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input[type="text"],
.form-group input[type="number"] {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Emoji Selector */
.emoji-selector,
.color-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.emoji-selector input[type="radio"],
.color-selector input[type="radio"] {
    display: none;
}

.emoji-option {
    font-size: 2rem;
    width: 3.5rem;
    height: 3.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
}

.emoji-option:hover {
    transform: scale(1.1);
    border-color: var(--primary-blue);
}

.emoji-selector input[type="radio"]:checked + .emoji-option {
    border-color: var(--primary-blue);
    background: var(--accent-blue);
    box-shadow: var(--shadow-md);
}

.color-option {
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.color-option:hover {
    transform: scale(1.1);
    border-width: 3px;
}

.color-selector input[type="radio"]:checked + .color-option {
    border: 3px solid var(--text-primary);
    box-shadow: var(--shadow-lg);
}

/* Buttons */
.btn-primary {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark));
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary i {
    margin-right: 0.5rem;
}

.signin-note {
    margin-top: 1.5rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* Footer */
.landing-footer {
    margin-top: 4rem;
    padding: 2rem 1rem;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.copyright {
    color: var(--text-light);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .landing-container {
        padding: 1rem;
    }
    
    .logo h1 {
        font-size: 2rem;
    }
    
    .welcome-section h2 {
        font-size: 1.5rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }
    
    .rewards-banner {
        flex-direction: column;
        text-align: center;
    }
    
    .signin-section {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .emoji-option,
    .color-option {
        width: 2.5rem;
        height: 2.5rem;
    }
    
    .emoji-option {
        font-size: 1.5rem;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Alert Messages */
.alert {
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #86efac;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #93c5fd;
}