/* Contact Page Styles - Professional Design */

/* Main container */
.contact-content {
    padding: 0;
    background: var(--bg-primary, #ffffff);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Hero Section */
.contact-hero {
    position: relative;
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.95) 0%, 
        rgba(147, 51, 234, 0.95) 50%, 
        rgba(236, 72, 153, 0.95) 100%);
    padding: 8rem 0 6rem;
    text-align: center;
    color: white;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.1) 2px, transparent 2px),
        radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.1) 2px, transparent 2px);
    background-size: 60px 60px;
    animation: float-pattern 20s ease-in-out infinite;
}

@keyframes float-pattern {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(1deg); }
    66% { transform: translate(-20px, 20px) rotate(-1deg); }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 2rem;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    margin-bottom: 2rem;
    font-size: 1rem;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.badge-icon {
    font-size: 1.2rem;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.title-main {
    display: block;
}

.title-sub {
    display: block;
    background: linear-gradient(45deg, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    line-height: 1.6;
    color: white;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 3rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
    color: #fbbf24;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.hero-btn.primary {
    background: white;
    color: #1e293b;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.hero-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.hero-btn.secondary {
    background: transparent;
    color: white;
    border-color: rgba(255, 255, 255, 0.5);
}

.hero-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 900;
    color: #1e293b;
    margin-bottom: 1rem;
    line-height: 1.2;
    text-align: center;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

/* Contact Channels */
.contact-channels {
    padding: 6rem 0;
    background: #f8fafc;
}

.channels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.channel-card {
    background: white;
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
    position: relative;
}

.channel-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.channel-card.featured {
    border: 2px solid #3b82f6;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.02), rgba(147, 51, 234, 0.02));
}

.channel-card.featured::before {
    content: "Khuyến nghị";
    position: absolute;
    top: -10px;
    left: 2rem;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: white;
    padding: 0.25rem 1rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

.channel-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.channel-icon {
    position: relative;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.channel-icon .icon {
    font-size: 1.8rem;
}

.status-indicator {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 3px solid white;
}

.status-indicator.online {
    background: #22c55e;
    box-shadow: 0 0 10px rgba(34, 197, 94, 0.5);
    animation: pulse-status 2s infinite;
}

@keyframes pulse-status {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.channel-info {
    flex: 1;
}

.channel-name {
    font-size: 1.3rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 0.25rem;
}

.channel-status {
    color: #64748b;
    font-size: 0.9rem;
}

.response-time {
    text-align: right;
}

.response-time .time {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    color: #22c55e;
}

.response-time .label {
    font-size: 0.8rem;
    color: #64748b;
}

.channel-description {
    margin-bottom: 1.5rem;
}

.channel-description p {
    color: #64748b;
    line-height: 1.6;
}

.channel-features {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.channel-features .feature {
    color: #22c55e;
    font-size: 0.9rem;
    font-weight: 500;
}

.channel-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 1rem;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.channel-btn.primary {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: white;
    box-shadow: 0 5px 15px rgba(59, 130, 246, 0.3);
}

.channel-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.4);
}

.channel-btn:not(.primary) {
    background: #f8fafc;
    color: #1e293b;
    border: 1px solid #e2e8f0;
}

.channel-btn:not(.primary):hover {
    background: #e2e8f0;
    transform: translateY(-1px);
}

/* Contact Form */
.contact-form-section {
    padding: 6rem 0;
    background: white;
}

.form-container {
    max-width: 800px;
    margin: 0 auto;
    background: #f8fafc;
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

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

.form-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: #1e293b;
    margin-bottom: 1rem;
}

.form-subtitle {
    color: #64748b;
    font-size: 1.1rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    position: relative;
}

.form-label {
    display: block;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.5rem;
}

.form-control {
    width: 100%;
    padding: 1rem 3rem 1rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
    box-sizing: border-box;
}

.form-control:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-icon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2rem;
    color: #94a3b8;
    pointer-events: none;
    margin-top: 0.75rem;
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

.character-count {
    position: absolute;
    bottom: 0.5rem;
    right: 1rem;
    font-size: 0.8rem;
    color: #94a3b8;
}

.checkbox-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    font-size: 0.95rem;
    color: #64748b;
}

.checkbox-container input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid #e2e8f0;
    border-radius: 4px;
    position: relative;
    transition: all 0.3s ease;
}

.checkbox-container input:checked + .checkmark {
    background: #3b82f6;
    border-color: #3b82f6;
}

.checkbox-container input:checked + .checkmark::after {
    content: "✓";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
    font-weight: bold;
}

.form-actions {
    text-align: center;
    margin-top: 2rem;
}

.submit-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.25rem 3rem;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(59, 130, 246, 0.4);
}

.btn-loading {
    display: none;
}

.submit-btn.loading .btn-text,
.submit-btn.loading .btn-icon {
    opacity: 0;
}

.submit-btn.loading .btn-loading {
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.form-note {
    margin-top: 1rem;
    color: #64748b;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .channels-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 1.5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .channels-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .channel-card {
        padding: 2rem;
    }
    
    .form-container {
        padding: 2rem;
    }
    
    .form-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .hero-content {
        padding: 0 1rem;
    }
    
    .channel-card {
        padding: 1.5rem;
    }
    
    .form-container {
        padding: 1.5rem;
    }
    
    .channel-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 1rem;
    }
    
    .response-time {
        text-align: center;
    }
}