/* PDPM-G Provisioning Website - Clean & Modern Styling */

:root {
    --primary-color: #0066cc;
    --secondary-color: #5856d6;
    --success-color: #34c759;
    --danger-color: #ff3b30;
    --text-dark: #1a1a1a;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --border-color: #e0e0e0;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background: #fff;
}

/* Header & Navigation */
header {
    background: white;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 0;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-dark);
    text-decoration: none;
    transition: color 0.3s;
}

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

.nav-links .factory-link {
    color: var(--primary-color);
    font-weight: 600;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: #0052a3;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 102, 204, 0.3);
}

.btn-secondary {
    background: white;
    color: var(--primary-color);
}

.btn-secondary:hover {
    background: var(--bg-light);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Sections */
.section {
    padding: 3rem 0;
    border-bottom: 1px solid var(--border-color);
}

.section:last-child {
    border-bottom: none;
}

.section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section > p {
    color: var(--text-light);
    margin-bottom: 2rem;
}

/* Firmware Cards */
.firmware-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: box-shadow 0.3s;
}

.firmware-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.firmware-info h3 {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

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

.firmware-info .filename {
    font-family: 'Courier New', monospace;
    background: var(--bg-light);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    display: inline-block;
    margin-top: 0.5rem;
}

/* Firmware List */
.firmware-list {
    margin-top: 2rem;
}

.firmware-list h3 {
    margin-bottom: 1rem;
}

.firmware-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.firmware-item:last-child {
    border-bottom: none;
}

.fw-meta {
    display: flex;
    gap: 1rem;
    color: var(--text-light);
    font-size: 0.875rem;
}

/* Forms */
.config-form,
.register-form {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
    margin-top: 1rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: var(--text-light);
    font-size: 0.875rem;
}

.advanced-settings {
    margin-top: 1.5rem;
    padding: 1rem;
    background: white;
    border-radius: 8px;
}

.advanced-settings summary {
    cursor: pointer;
    font-weight: 500;
    color: var(--primary-color);
    user-select: none;
}

/* Guide Steps */
.guide-steps {
    margin-top: 2rem;
}

.step {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.step-number {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: bold;
}

.step-content h3 {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.step-content p {
    color: var(--text-light);
}

.step-content pre {
    background: #1a1a1a;
    color: #0f0;
    padding: 1rem;
    border-radius: 6px;
    margin-top: 0.5rem;
    overflow-x: auto;
}

.step-content code {
    font-family: 'Courier New', monospace;
}

/* Safety Warning */
.safety-warning {
    background: #fff3cd;
    border: 2px solid #ffc107;
    border-radius: 8px;
    padding: 1.5rem;
    margin-top: 2rem;
}

.safety-warning h3 {
    color: #856404;
    margin-bottom: 0.5rem;
}

.safety-warning p {
    color: #856404;
    margin-bottom: 0.5rem;
}

.safety-warning p strong {
    color: var(--danger-color);
}

/* Footer */
footer {
    background: var(--bg-light);
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
    color: var(--text-light);
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .nav-links {
        gap: 1rem;
        font-size: 0.875rem;
    }

    .firmware-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}