/**
 * Netram Electronics - 3D Printing Quote System
 * Design: Precision Manufacturing - Dark Theme
 * Colors: Netram Green (#4ADE80) + Rich Blacks
 */

/* ========================================
   CSS Variables & Theme
   ======================================== */
:root {
    /* Brand Colors */
    --netram-green: #4ADE80;
    --netram-green-light: #86EFAC;
    --netram-green-dark: #22C55E;
    --netram-green-glow: rgba(74, 222, 128, 0.3);

    /* Dark Theme */
    --bg-primary: #0A0A0A;
    --bg-secondary: #111111;
    --bg-card: #161616;
    --bg-card-hover: #1A1A1A;
    --bg-elevated: #1E1E1E;

    /* Text Colors */
    --text-primary: #FAFAFA;
    --text-secondary: #A1A1AA;
    --text-muted: #71717A;

    /* Borders & Lines */
    --border-color: #27272A;
    --border-highlight: #3F3F46;

    /* Status Colors */
    --success: #4ADE80;
    --error: #F87171;
    --warning: #FBBF24;
    --info: #60A5FA;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--netram-green-glow);

    /* Typography */
    --font-display: 'Outfit', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* ========================================
   Base & Reset
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-display);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Background Pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 20%, rgba(74, 222, 128, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(74, 222, 128, 0.02) 0%, transparent 50%),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 50px,
            rgba(74, 222, 128, 0.01) 50px,
            rgba(74, 222, 128, 0.01) 51px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 50px,
            rgba(74, 222, 128, 0.01) 50px,
            rgba(74, 222, 128, 0.01) 51px
        );
    pointer-events: none;
    z-index: -1;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.25rem; }

a {
    color: var(--netram-green);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--netram-green-light);
}

/* ========================================
   Container & Layout
   ======================================== */
.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 60px 24px;
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   Header & Brand
   ======================================== */
.brand-header {
    text-align: center;
    margin-bottom: 48px;
}

.brand-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.brand-logo svg {
    width: 48px;
    height: 48px;
}

.brand-logo .logo-image {
    max-width: 250px;
    width: auto;
    height: auto;
    display: block;
    margin: 0 auto;
}

.brand-logo h1 {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-tagline {
    color: var(--text-secondary);
    font-size: 1.125rem;
    font-weight: 400;
    margin: 0;
}

.brand-tagline span {
    color: var(--netram-green);
    font-weight: 500;
}

/* ========================================
   Drop Zone - The Star Component
   ======================================== */
.drop-zone {
    position: relative;
    border: 2px dashed var(--border-highlight);
    border-radius: var(--radius-xl);
    padding: 64px 40px;
    text-align: center;
    cursor: pointer;
    background: var(--bg-card);
    transition: all var(--transition-base);
    overflow: hidden;
}

/* Mouse-following glow effect */
.drop-zone::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(
        circle at var(--glow-x, 50%) var(--glow-y, 50%),
        rgba(74, 222, 128, 0.2) 0%,
        transparent 40%
    );
    border-radius: inherit;
    z-index: 0;
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.drop-zone:hover::before,
.drop-zone.drag-over::before {
    opacity: 1;
}

.drop-zone:hover {
    border-color: var(--netram-green);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.drop-zone.drag-over {
    border-color: var(--netram-green);
    background: rgba(74, 222, 128, 0.05);
    transform: scale(1.02);
    box-shadow: var(--shadow-glow);
}

/* Drop zone content - ensure it's above the glow */
.drop-zone > * {
    position: relative;
    z-index: 1;
}

/* Upload Icon */
.drop-zone-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-elevated), var(--bg-secondary));
    border-radius: 50%;
    border: 2px solid var(--border-color);
    transition: all var(--transition-base);
}

.drop-zone-icon svg {
    width: 36px;
    height: 36px;
    stroke: var(--netram-green);
    stroke-width: 1.5;
    transition: transform var(--transition-base);
}

.drop-zone:hover .drop-zone-icon {
    border-color: var(--netram-green);
    box-shadow: 0 0 20px var(--netram-green-glow);
}

.drop-zone:hover .drop-zone-icon svg {
    transform: translateY(-4px);
}

.drop-zone h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.drop-zone p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 4px 0;
}

.drop-zone .file-info {
    display: inline-block;
    margin-top: 16px;
    padding: 8px 16px;
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 0.8rem;
    font-family: var(--font-mono);
}

.bulk-notice {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 12px;
}

.bulk-notice a {
    color: var(--netram-green);
    text-decoration: none;
    font-weight: 500;
}

.bulk-notice a:hover {
    text-decoration: underline;
}

/* Hidden file input */
#file-input {
    display: none;
}

/* ========================================
   Status Boxes
   ======================================== */
.status-box {
    margin: 24px 0;
    padding: 24px;
    border-radius: var(--radius-lg);
    animation: slideIn 0.4s ease-out;
    border: 1px solid;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.status-box.success {
    background: rgba(74, 222, 128, 0.1);
    border-color: rgba(74, 222, 128, 0.3);
    color: var(--success);
}

.status-box.error {
    background: rgba(248, 113, 113, 0.1);
    border-color: rgba(248, 113, 113, 0.3);
    color: var(--error);
}

.status-box.uploading {
    background: rgba(96, 165, 250, 0.1);
    border-color: rgba(96, 165, 250, 0.3);
    color: var(--info);
}

.status-box.processing {
    background: rgba(74, 222, 128, 0.05);
    border-color: rgba(74, 222, 128, 0.2);
    display: flex;
    justify-content: center;
    align-items: center;
}

.status-box h3 {
    font-size: 1.125rem;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-box p {
    margin: 8px 0;
    color: var(--text-secondary);
}

.status-box strong {
    color: var(--text-primary);
}

/* ========================================
   Progress Bar
   ======================================== */
.upload-progress {
    text-align: center;
}

.upload-progress > p:first-child {
    margin-bottom: 16px;
    color: var(--text-primary);
}

.progress-container {
    width: 100%;
    height: 8px;
    background: var(--bg-elevated);
    border-radius: 4px;
    overflow: hidden;
    margin: 16px 0;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--netram-green-dark), var(--netram-green), var(--netram-green-light));
    background-size: 200% 100%;
    width: 0%;
    border-radius: 4px;
    transition: width var(--transition-fast);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

#progress-text {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--netram-green);
}

/* ========================================
   Quote Form Container
   ======================================== */
.quote-form-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 32px;
    margin: 32px 0;
    animation: slideIn 0.4s ease-out;
}

/* File Summary Card */
.file-summary {
    background: linear-gradient(135deg, rgba(74, 222, 128, 0.1), rgba(74, 222, 128, 0.05));
    border: 1px solid rgba(74, 222, 128, 0.2);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 32px;
    position: relative;
    overflow: hidden;
}

.file-summary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--netram-green);
}

.file-summary h3 {
    color: var(--netram-green);
    font-size: 1.125rem;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.file-summary p {
    color: var(--text-secondary);
    margin: 8px 0;
    font-size: 0.95rem;
}

.file-details {
    display: grid;
    gap: 8px;
}

.file-details p {
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.file-details strong {
    color: var(--text-primary);
    font-weight: 500;
}

/* ========================================
   Form Elements
   ======================================== */
.quote-form h3 {
    color: var(--text-primary);
    font-size: 1.125rem;
    margin: 28px 0 16px 0;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.quote-form hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 32px 0;
}

.form-group {
    margin: 20px 0;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-group select,
.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"] {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 1rem;
    transition: all var(--transition-fast);
    appearance: none;
}

.form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2371717A' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 48px;
    cursor: pointer;
}

.form-group select:focus,
.form-group input:focus {
    outline: none;
    border-color: var(--netram-green);
    box-shadow: 0 0 0 3px var(--netram-green-glow);
}

.form-group select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.form-group small {
    display: block;
    margin-top: 8px;
    color: var(--text-muted);
    font-size: 0.8rem;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

/* Textarea Styling */
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 1rem;
    transition: all var(--transition-fast);
    resize: vertical;
    min-height: 80px;
}

.form-group textarea:focus {
    outline: none;
    border-color: var(--netram-green);
    box-shadow: 0 0 0 3px var(--netram-green-glow);
}

/* Required Field Star */
.required-star {
    color: var(--error);
    font-weight: 600;
}

/* Form Row (side-by-side fields) */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 480px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* Checkbox Group */
.checkbox-group {
    margin: 24px 0;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.checkbox-custom {
    width: 22px;
    height: 22px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-highlight);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.checkbox-custom::after {
    content: '';
    width: 6px;
    height: 10px;
    border: solid var(--netram-green);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) scale(0);
    transition: transform var(--transition-fast);
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom {
    background: rgba(74, 222, 128, 0.1);
    border-color: var(--netram-green);
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom::after {
    transform: rotate(45deg) scale(1);
}

.checkbox-label:hover .checkbox-custom {
    border-color: var(--netram-green);
}

.checkbox-text {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
}

/* Shipping Fields Section */
.shipping-fields {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin: 20px 0;
    animation: slideIn 0.3s ease-out;
}

.shipping-fields h4 {
    color: var(--netram-green);
    font-size: 1rem;
    margin: 0 0 20px 0;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.shipping-fields h4::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 16px;
    background: var(--netram-green);
    border-radius: 2px;
}

.shipping-fields .form-group {
    margin: 16px 0;
}

.shipping-fields .form-group:first-of-type {
    margin-top: 0;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

/* Submit Total Summary */
.submit-total-summary {
    background: rgba(78, 205, 139, 0.08);
    border: 1px solid rgba(78, 205, 139, 0.3);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-bottom: 16px;
}

.submit-total-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.submit-total-row span:first-child {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.submit-total-price {
    color: var(--netram-green) !important;
    font-size: 1.35rem !important;
    font-weight: 700;
}

.submit-shipping-note {
    margin-top: 6px;
    padding-top: 8px;
    border-top: 1px dashed rgba(78, 205, 139, 0.2);
}

.submit-shipping-note span {
    font-size: 0.85rem !important;
    font-weight: 400 !important;
    color: var(--text-secondary) !important;
}

.btn-submit {
    width: 100%;
    padding: 16px 24px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-top: 8px;
}

.btn-submit:not(.btn-secondary),
.btn-primary {
    background: linear-gradient(135deg, var(--netram-green-dark), var(--netram-green));
    color: #000;
    box-shadow: 0 4px 14px var(--netram-green-glow);
}

.btn-submit:not(.btn-secondary):hover:not(:disabled),
.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--netram-green), var(--netram-green-light));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--netram-green-glow);
}

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--border-highlight);
}

.btn-success {
    background: linear-gradient(135deg, var(--netram-green-dark), var(--netram-green));
    color: #000;
    box-shadow: 0 4px 14px var(--netram-green-glow);
}

.btn-success:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--netram-green), var(--netram-green-light));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--netram-green-glow);
}

.btn-danger {
    background: linear-gradient(135deg, #b91c1c, #dc2626);
    color: #fff;
    border: 1px solid #dc2626;
}

.btn-danger:hover:not(:disabled) {
    background: linear-gradient(135deg, #dc2626, #ef4444);
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(220, 38, 38, 0.3);
}

.btn-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* Secondary button group (side by side) */
.btn-group-secondary {
    display: flex;
    gap: 12px;
    margin-top: 12px;
}

.btn-group-secondary .btn-submit {
    flex: 1;
    margin-top: 0;
}

/* ========================================
   Form Errors
   ======================================== */
.form-errors {
    margin: 16px 0;
}

.form-errors .error,
.error {
    background: rgba(248, 113, 113, 0.1);
    color: var(--error);
    padding: 14px 16px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(248, 113, 113, 0.2);
    margin: 8px 0;
    font-size: 0.9rem;
}

/* ========================================
   Estimate Preview
   ======================================== */
.estimate-details {
    margin-top: 24px;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin: 20px 0;
}

.info-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 16px;
    border-radius: var(--radius-md);
    text-align: center;
    transition: all var(--transition-fast);
}

.info-box:hover {
    border-color: var(--border-highlight);
    transform: translateY(-2px);
}

.info-box label {
    display: block;
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
    font-weight: 600;
}

.info-box strong {
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 600;
}

/* Price Breakdown */
.price-breakdown-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin: 28px 0;
}

.price-breakdown-box h3 {
    margin: 0 0 20px 0;
    padding: 0;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
}

.breakdown-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.breakdown-row:last-of-type {
    border-bottom: none;
}

.breakdown-row.total {
    margin-top: 16px;
    padding-top: 20px;
    border-top: 2px solid var(--netram-green);
    border-bottom: none;
    font-size: 1.125rem;
}

.breakdown-row.total span {
    color: var(--text-primary);
}

.price-highlight {
    color: var(--netram-green) !important;
    font-size: 1.5rem !important;
    font-weight: 700;
}

/* Note Text */
.note-text {
    background: rgba(251, 191, 36, 0.1);
    border: 1px solid rgba(251, 191, 36, 0.2);
    border-radius: var(--radius-md);
    padding: 16px;
    color: var(--warning);
    font-size: 0.875rem;
    margin: 24px 0;
}

.note-text strong {
    color: var(--warning);
}

/* ========================================
   Success Container
   ======================================== */
.success-container {
    text-align: center;
    padding: 48px 24px;
    animation: successPop 0.5s ease-out;
}

@keyframes successPop {
    0% {
        opacity: 0;
        transform: scale(0.9);
    }
    50% {
        transform: scale(1.02);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.success-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--netram-green-dark), var(--netram-green));
    border-radius: 50%;
    font-size: 40px;
    color: #000;
    box-shadow: 0 0 40px var(--netram-green-glow);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 40px var(--netram-green-glow);
    }
    50% {
        box-shadow: 0 0 60px var(--netram-green-glow), 0 0 80px rgba(74, 222, 128, 0.2);
    }
}

.success-container h2 {
    color: var(--netram-green);
    font-size: 1.75rem;
    margin-bottom: 32px;
}

/* Quote Summary */
.quote-summary {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    margin: 28px 0;
    text-align: left;
}

.quote-summary h3 {
    color: var(--text-primary);
    font-size: 1rem;
    margin: 0 0 16px 0;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.quote-summary h3:not(:first-child) {
    margin-top: 28px;
}

.quote-summary p {
    margin: 10px 0;
    color: var(--text-secondary);
}

.quote-summary strong {
    color: var(--text-primary);
}

/* Reference Code */
.ref-code {
    background: rgba(74, 222, 128, 0.1);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--netram-green);
    border: 1px solid rgba(74, 222, 128, 0.2);
}

.ref-code-large {
    background: linear-gradient(135deg, rgba(74, 222, 128, 0.15), rgba(74, 222, 128, 0.05));
    border: 2px solid var(--netram-green);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    font-family: var(--font-mono);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--netram-green);
    text-align: center;
    margin: 16px 0;
    letter-spacing: 0.05em;
    box-shadow: 0 0 30px var(--netram-green-glow);
}

.price {
    font-size: 1.5rem;
    color: var(--netram-green);
    font-weight: 700;
}

.price-breakdown {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-top: 16px;
    border: 1px solid var(--border-color);
}

.price-breakdown p {
    margin: 8px 0;
    font-size: 0.875rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
}

/* Next Steps */
.next-steps {
    background: linear-gradient(135deg, rgba(74, 222, 128, 0.08), rgba(74, 222, 128, 0.03));
    border: 1px solid rgba(74, 222, 128, 0.15);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin: 28px 0;
    text-align: left;
}

.next-steps h3 {
    color: var(--netram-green);
    font-size: 1rem;
    margin-bottom: 16px;
}

.next-steps ol {
    margin: 0;
    padding-left: 24px;
    counter-reset: step-counter;
    list-style: none;
}

.next-steps li {
    position: relative;
    margin: 14px 0;
    color: var(--text-secondary);
    padding-left: 8px;
    counter-increment: step-counter;
}

.next-steps li::before {
    content: counter(step-counter);
    position: absolute;
    left: -28px;
    width: 22px;
    height: 22px;
    background: var(--netram-green);
    color: #000;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Note Box */
.note {
    background: rgba(251, 191, 36, 0.1);
    border: 1px solid rgba(251, 191, 36, 0.2);
    border-radius: var(--radius-md);
    padding: 16px;
    color: var(--warning);
    margin: 24px 0;
    font-size: 0.9rem;
}

/* New Quote Button */
.btn-new-quote {
    padding: 16px 32px;
    background: linear-gradient(135deg, var(--netram-green-dark), var(--netram-green));
    color: #000;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 24px;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 14px var(--netram-green-glow);
}

.btn-new-quote:hover {
    background: linear-gradient(135deg, var(--netram-green), var(--netram-green-light));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--netram-green-glow);
}

/* ========================================
   Info Card
   ======================================== */
.info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 32px;
    margin: 48px 0;
    position: relative;
    overflow: hidden;
}

.info-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--netram-green), transparent);
}

.info-card h2 {
    color: var(--text-primary);
    font-size: 1.25rem;
    margin-bottom: 20px;
}

.info-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.info-card li {
    position: relative;
    padding: 12px 0 12px 32px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.info-card li:last-child {
    border-bottom: none;
}

.info-card li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: var(--netram-green);
    border-radius: 50%;
}

.info-card p {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.info-card a {
    font-weight: 600;
}

/* ========================================
   SEO Content Section
   ======================================== */
.seo-content {
    margin: 0 0 48px 0;
    border-top: 1px solid var(--border-color);
    padding-top: 48px;
}

.seo-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.seo-block {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
}

.seo-block h2 {
    color: var(--text-primary);
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 12px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--netram-green);
    display: inline-block;
}

.seo-block p {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.65;
    margin: 0 0 10px 0;
}

.seo-block p:last-child {
    margin-bottom: 0;
}

.seo-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 14px;
}

.seo-tag {
    display: inline-block;
    background: rgba(78, 205, 139, 0.1);
    border: 1px solid rgba(78, 205, 139, 0.25);
    color: var(--netram-green);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
}

.seo-footer {
    margin-top: 24px;
    text-align: center;
}

.seo-footer p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.seo-footer a {
    color: var(--netram-green);
    text-decoration: none;
    font-weight: 500;
}

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

@media (max-width: 640px) {
    .seo-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   Upload Success State
   ======================================== */
.upload-success h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--netram-green);
    margin-bottom: 16px;
}

.upload-success p {
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.upload-error h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--error);
    margin-bottom: 12px;
}

/* ========================================
   Upload Processing State
   ======================================== */
.upload-processing {
    text-align: center;
    padding: 20px 0;
}

.upload-processing h3 {
    color: var(--netram-green);
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.upload-processing .processing-status {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 4px;
}

.upload-processing .processing-hint {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* 3D Cube Grid Animation */
.processing-animation {
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
}

.cube-grid {
    width: 60px;
    height: 60px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
}

.cube {
    background: var(--netram-green);
    border-radius: 2px;
    animation: cube-pulse 1.2s ease-in-out infinite;
}

.cube:nth-child(1) { animation-delay: 0s; }
.cube:nth-child(2) { animation-delay: 0.1s; }
.cube:nth-child(3) { animation-delay: 0.2s; }
.cube:nth-child(4) { animation-delay: 0.1s; }
.cube:nth-child(5) { animation-delay: 0.2s; }
.cube:nth-child(6) { animation-delay: 0.3s; }
.cube:nth-child(7) { animation-delay: 0.2s; }
.cube:nth-child(8) { animation-delay: 0.3s; }
.cube:nth-child(9) { animation-delay: 0.4s; }

@keyframes cube-pulse {
    0%, 70%, 100% {
        transform: scale3D(1, 1, 1);
        opacity: 1;
    }
    35% {
        transform: scale3D(0, 0, 1);
        opacity: 0.3;
    }
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }
.hidden { display: none; }

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    html { font-size: 15px; }

    .container {
        padding: 40px 16px;
    }

    .drop-zone {
        padding: 48px 24px;
    }

    .drop-zone-icon {
        width: 64px;
        height: 64px;
    }

    .drop-zone-icon svg {
        width: 28px;
        height: 28px;
    }

    .brand-logo h1 {
        font-size: 1.5rem;
    }

    .quote-form-container {
        padding: 24px 20px;
    }

    .info-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .ref-code-large {
        font-size: 1.25rem;
        padding: 16px;
    }

    .success-container {
        padding: 32px 16px;
    }
}

@media (max-width: 480px) {
    .info-grid {
        grid-template-columns: 1fr;
    }

    .brand-logo {
        flex-direction: column;
        gap: 8px;
    }

    .brand-logo .logo-image {
        max-width: 150px;
    }
}

/* ========================================
   Loading States & Animations
   ======================================== */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top-color: var(--netram-green);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Skeleton loading effect */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-secondary) 0%,
        var(--bg-elevated) 50%,
        var(--bg-secondary) 100%
    );
    background-size: 200% 100%;
    animation: skeleton 1.5s infinite;
}

@keyframes skeleton {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ========================================
   Scrollbar Styling
   ======================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-highlight);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ========================================
   Selection & Focus States
   ======================================== */
::selection {
    background: var(--netram-green);
    color: #000;
}

:focus-visible {
    outline: 2px solid var(--netram-green);
    outline-offset: 2px;
}

/* ========================================
   STL Model Viewer
   ======================================== */
.stl-viewer-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin: 24px 0;
    position: relative;
}

.stl-viewer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.stl-viewer-header h4 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.stl-viewer-header h4 svg {
    width: 18px;
    height: 18px;
    stroke: var(--netram-green);
}

.stl-viewer-controls {
    display: flex;
    gap: 8px;
}

.stl-viewer-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-secondary);
}

.stl-viewer-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--netram-green);
    color: var(--netram-green);
}

.stl-viewer-btn svg {
    width: 16px;
    height: 16px;
}

.stl-viewer-btn-text {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
}

.stl-viewer-btn-wide {
    width: auto;
    padding: 0 12px;
    font-size: 0.7rem;
    font-weight: 500;
}

.stl-viewer-separator {
    width: 1px;
    height: 20px;
    background: var(--border-color);
    margin: 0 4px;
}

#stl-viewer {
    width: 100%;
    height: 400px;
    position: relative;
    cursor: grab;
}

#stl-viewer:active {
    cursor: grabbing;
}

#stl-viewer canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.stl-viewer-loading {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(17, 17, 17, 0.9);
    z-index: 10;
}

.stl-viewer-loading .loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--netram-green);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.stl-viewer-loading p {
    margin-top: 16px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.stl-viewer-loading .loading-progress {
    color: var(--netram-green);
    font-family: var(--font-mono);
}

.stl-viewer-hint {
    padding: 12px 20px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.stl-viewer-hint span {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.stl-viewer-hint svg {
    width: 14px;
    height: 14px;
    stroke: var(--text-muted);
}

@media (max-width: 768px) {
    #stl-viewer {
        height: 300px;
    }

    .stl-viewer-hint {
        padding: 10px 16px;
        gap: 12px;
    }

    .stl-viewer-hint span {
        font-size: 0.7rem;
    }
}

/* ========================================
   Material Comparison Modal
   ======================================== */
.material-comparison-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
}

.modal-content {
    position: relative;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    max-width: 1000px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg), 0 0 60px rgba(74, 222, 128, 0.1);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-elevated);
}

.modal-header h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.modal-header h3 svg {
    stroke: var(--netram-green);
}

.modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.modal-close svg {
    stroke: var(--text-secondary);
    transition: var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-card);
}

.modal-close:hover svg {
    stroke: var(--netram-green);
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.material-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    transition: var(--transition-base);
}

.material-card:hover {
    border-color: var(--netram-green);
    box-shadow: 0 0 20px rgba(74, 222, 128, 0.1);
}

.material-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--netram-green);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.material-stats {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 16px;
}

.stat-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.stat-label {
    flex: 0 0 90px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.stat-bar {
    flex: 1;
    height: 8px;
    background: var(--bg-card);
    border-radius: 4px;
    overflow: hidden;
}

.stat-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--netram-green-dark), var(--netram-green));
    border-radius: 4px;
    transition: width 0.3s ease-out;
}

.material-info {
    font-size: 0.85rem;
}

.material-info p {
    margin-bottom: 8px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.material-info .temp {
    color: var(--text-primary);
}

.material-info .best-for {
    color: var(--netram-green-light);
}

.material-info .notes {
    font-style: italic;
    color: var(--text-muted);
    font-size: 0.8rem;
}

.comparison-legend {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.comparison-legend p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ========================================
   Quantity Badge & Discount Styling
   ======================================== */
.qty-badge {
    display: inline-block;
    background: var(--netram-green);
    color: var(--bg-primary);
    font-size: 0.7rem;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 12px;
    margin-left: 8px;
    vertical-align: middle;
}

.breakdown-row.subtotal-row {
    padding-top: 12px;
    margin-top: 8px;
    border-top: 1px dashed var(--border-color);
}

.breakdown-row.discount-row {
    color: var(--netram-green);
}

.breakdown-row.discount-row .discount-amount {
    color: var(--netram-green);
    font-weight: 600;
}

.breakdown-row.per-unit {
    padding-top: 8px;
    margin-top: 4px;
    border-top: 1px dashed var(--border-color);
    font-size: 0.9em;
    color: var(--text-muted);
}

/* ========================================
   Compare Materials Button
   ======================================== */
#compare-materials-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

#compare-materials-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--netram-green);
    color: var(--netram-green);
}

#compare-materials-btn svg {
    stroke: currentColor;
}

/* Responsive Modal */
@media (max-width: 768px) {
    .modal-content {
        max-height: 95vh;
        margin: 10px;
    }

    .comparison-grid {
        grid-template-columns: 1fr;
    }

    .modal-header {
        padding: 16px 20px;
    }

    .modal-body {
        padding: 16px;
    }

    .material-card {
        padding: 16px;
    }
}