:root {
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    --secondary-gradient: linear-gradient(135deg, #f43f5e 0%, #e11d48 100%);
    --accent-gradient: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    --warning-gradient: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    --glass-bg: rgba(255, 255, 255, 0.95);
    --glass-border: rgba(255, 255, 255, 0.4);
}

body {
    background: #f0f2f5;
    font-family: 'Outfit', 'Sarabun', sans-serif;
}

.complaint-wrapper {
    background: radial-gradient(circle at top right, rgba(99, 102, 241, 0.1), transparent),
                radial-gradient(circle at bottom left, rgba(244, 63, 94, 0.05), transparent);
    min-height: 100vh;
    padding: 4rem 1rem;
}

.complaint-container {
    max-width: 1000px;
    margin: 0 auto;
}

.premium-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    margin-bottom: 2.5rem;
    overflow: hidden;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease;
}

.premium-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 30px 40px -10px rgba(0, 0, 0, 0.15);
}

.card-header-premium {
    padding: 1.5rem 2rem;
    display: flex;
    align-items: center;
    color: #fff;
}

.card-header-premium i {
    font-size: 1.75rem;
    margin-right: 1rem;
    padding: 0.5rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
}

.card-header-premium h2 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0;
    letter-spacing: -0.025em;
}

.bg-gradient-1 { background: var(--primary-gradient); }
.bg-gradient-2 { background: var(--secondary-gradient); }
.bg-gradient-3 { background: var(--accent-gradient); }
.bg-gradient-4 { background: var(--warning-gradient); }

.premium-body {
    padding: 2.5rem;
}

.header-content {
    text-align: center;
    margin-bottom: 4rem;
}

.header-content h1 {
    font-size: 2.75rem;
    font-weight: 800;
    color: #1e293b;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #4338ca, #3b82f6);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-content p {
    font-size: 1.2rem;
    color: #64748b;
    font-weight: 500;
}

/* Form Elements */
.form-group-premium {
    margin-bottom: 1.5rem;
}

.form-label-premium {
    display: block;
    font-weight: 600;
    color: #475569;
    margin-bottom: 0.6rem;
    font-size: 0.95rem;
}

.form-control-premium {
    width: 100%;
    padding: 0.85rem 1.15rem;
    background-color: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: 14px;
    color: #1e293b;
    font-size: 1rem;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-control-premium:focus {
    border-color: #6366f1;
    background-color: #fff;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
    outline: none;
}

.upload-zone-premium {
    border: 2px dashed #cbd5e1;
    border-radius: 20px;
    padding: 3.5rem 2rem;
    text-align: center;
    background: #f8fafc;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.upload-zone-premium:hover {
    border-color: #6366f1;
    background: #f1f5f9;
    transform: scale(1.005);
}

.upload-zone-premium i {
    font-size: 3.5rem;
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
    display: block;
}

.info-box-premium {
    background: #fff;
    border-radius: 20px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    margin-bottom: 3rem;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.info-box-icon {
    background: #eff6ff;
    color: #2563eb;
    width: 50px;
    height: 50px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-right: 1.25rem;
    flex-shrink: 0;
}

.btn-premium-submit {
    background: var(--primary-gradient);
    color: white;
    padding: 1.1rem 3.5rem;
    border-radius: 16px;
    font-weight: 700;
    font-size: 1.15rem;
    border: none;
    box-shadow: 0 10px 20px -5px rgba(79, 70, 229, 0.4);
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 4rem auto;
    cursor: pointer;
}

.btn-premium-submit:hover {
    transform: translateY(-5px) scale(1.03);
    box-shadow: 0 25px 30px -10px rgba(79, 70, 229, 0.5);
}

.confirm-checkbox-premium {
    background: #fff;
    padding: 1.5rem;
    border-radius: 16px;
    border: 2px solid #e2e8f0;
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s;
}

.confirm-checkbox-premium:hover {
    border-color: #6366f1;
    background: #f8fafc;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .complaint-wrapper { padding: 2rem 0.5rem; }
    .header-content h1 { font-size: 1.8rem; }
    .header-content p { font-size: 1rem; }
    .premium-body { padding: 1.5rem 1rem; }
    .card-header-premium { padding: 1.25rem; }
    .card-header-premium h2 { font-size: 1.15rem; }
    .btn-premium-submit { width: 100%; padding: 1rem; }
    .upload-zone-premium { padding: 2rem 1rem; }
    .info-box-premium { padding: 1rem; margin-bottom: 2rem; }
}