/* 
   Sellio Premium Installer Design System
   Visual Language: Glassmorphism, Vibrant Gradients, Modern Typography
*/

:root {
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --success: #10b981;
    --success-light: #34d399;
    --warning: #f59e0b;
    --danger: #ef4444;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --bg-body: #f1f5f9;
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(255, 255, 255, 0.5);
    --shadow-premium: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 40px 0;
}

.container-installer {
    max-width: 950px;
    width: 100%;
}

.install-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    box-shadow: var(--shadow-premium);
    padding: 3.5rem;
    position: relative;
    overflow: hidden;
}

.install-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
}

/* Typography */
h1 {
    font-weight: 800;
    letter-spacing: -1px;
    background: linear-gradient(90deg, var(--primary-dark), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 2.5rem;
}

/* Stepper */
.stepper {
    display: flex;
    justify-content: space-between;
    margin-bottom: 4rem;
    position: relative;
}

.stepper::before {
    content: '';
    position: absolute;
    top: 24px;
    left: 5%;
    right: 5%;
    height: 3px;
    background: #e2e8f0;
    border-radius: 4px;
    z-index: 0;
}

.step {
    flex: 1;
    text-align: center;
    position: relative;
    z-index: 1;
    transition: all 0.3s ease;
}

.step-icon {
    width: 50px;
    height: 50px;
    background: #fff;
    border: 3px solid #e2e8f0;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    color: var(--text-muted);
    font-size: 1.25rem;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.step-name {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

/* Active Step */
.step.active .step-icon {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    transform: scale(1.1);
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.4);
}

.step.active .step-name {
    color: var(--primary);
}

/* Completed Step */
.step.completed .step-icon {
    background: var(--success);
    border-color: var(--success);
    color: #fff;
}

.step.completed .step-name {
    color: var(--success);
}

/* Forms */
.form-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.6rem;
}

.form-control {
    border-radius: 12px;
    padding: 0.75rem 1rem;
    border: 2px solid #e2e8f0;
    background: rgba(255, 255, 255, 0.5);
    transition: all 0.2s ease;
}

.form-control:focus {
    background: #fff;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.btn {
    border-radius: 12px;
    padding: 0.8rem 2rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(90deg, var(--primary-dark), var(--primary));
    border: none;
    box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.39);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
}

.btn-outline-secondary {
    border: 2px solid #e2e8f0;
    color: var(--text-muted);
}

.btn-outline-secondary:hover {
    background: #e2e8f0;
    color: var(--text-main);
}

/* Custom UI Elements */
.requirement-item {
    padding: 1rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.5);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    border: 1px solid transparent;
    transition: all 0.2s ease;
}

.requirement-item:hover {
    background: #fff;
    border-color: #e2e8f0;
}

.badge-status {
    padding: 0.4rem 0.8rem;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 800;
}

/* Code & Logs */
pre {
    background: #1e293b !important;
    color: #f1f5f9 !important;
    padding: 1.5rem;
    border-radius: 12px;
    font-size: 0.85rem;
    border: 1px solid #334155;
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

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