/*
==============================================
  Interactive Quote Builder - Supreme Valves India
==============================================
*/

/* ---- CSS Variables (inherits from :root in styles.css) ---- */
:root {
    --qb-primary: #0f172a;
    --qb-secondary: #334155;
    --qb-accent: #dc2626;
    --qb-accent-hover: #b91c1c;
    --qb-success: #059669;
    --qb-background: #f8fafc;
    --qb-surface: #ffffff;
    --qb-border: #e2e8f0;
    --qb-text: #1e293b;
    --qb-text-light: #64748b;
    --qb-nab: #7c3aed;
    --qb-nab-bg: #f5f3ff;
}

/* ---- Quote Builder Container ---- */
.quote-builder {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 1rem;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ---- Progress Stepper ---- */
.qb-stepper {
    display: flex;
    justify-content: space-between;
    margin-bottom: 3rem;
    position: relative;
}

.qb-stepper::before {
    content: '';
    position: absolute;
    top: 24px;
    left: 10%;
    right: 10%;
    height: 3px;
    background: var(--qb-border);
    z-index: 0;
}

.qb-stepper-progress {
    position: absolute;
    top: 24px;
    left: 10%;
    height: 3px;
    background: var(--qb-accent);
    z-index: 1;
    transition: width 0.4s ease;
    width: 0%;
}

.qb-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 2;
    flex: 1;
}

.qb-step-number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--qb-surface);
    border: 3px solid var(--qb-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--qb-text-light);
    transition: all 0.3s ease;
    margin-bottom: 0.75rem;
}

.qb-step.active .qb-step-number {
    border-color: var(--qb-accent);
    background: var(--qb-accent);
    color: white;
    box-shadow: 0 4px 14px rgba(220, 38, 38, 0.35);
}

.qb-step.completed .qb-step-number {
    border-color: var(--qb-success);
    background: var(--qb-success);
    color: white;
}

.qb-step-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--qb-text-light);
    text-align: center;
    transition: color 0.3s ease;
}

.qb-step.active .qb-step-label {
    color: var(--qb-accent);
}

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

/* ---- Step Content ---- */
.qb-step-content {
    display: none;
    animation: qbFadeIn 0.4s ease;
}

.qb-step-content.active {
    display: block;
}

@keyframes qbFadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---- Step Header ---- */
.qb-step-header {
    margin-bottom: 2rem;
}

.qb-step-header h2 {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--qb-primary);
    margin-bottom: 0.5rem;
}

.qb-step-header p {
    color: var(--qb-text-light);
    font-size: 0.95rem;
}

/* ---- Valve Type Cards ---- */
.qb-valve-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
}

.qb-valve-card {
    background: var(--qb-surface);
    border: 2px solid var(--qb-border);
    border-radius: 12px;
    padding: 1.5rem 1rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.25s ease;
    position: relative;
}

.qb-valve-card:hover {
    border-color: var(--qb-accent);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.qb-valve-card.selected {
    border-color: var(--qb-accent);
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.04), rgba(220, 38, 38, 0.08));
    box-shadow: 0 4px 16px rgba(220, 38, 38, 0.15);
}

.qb-valve-card.selected::after {
    content: '';
    position: absolute;
    top: 10px;
    right: 10px;
    width: 22px;
    height: 22px;
    background: var(--qb-accent);
    border-radius: 50%;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E");
    background-size: 14px;
    background-position: center;
    background-repeat: no-repeat;
}

.qb-valve-icon {
    font-size: 2.2rem;
    margin-bottom: 0.75rem;
    color: var(--qb-secondary);
    transition: color 0.25s ease;
}

.qb-valve-card.selected .qb-valve-icon {
    color: var(--qb-accent);
}

.qb-valve-name {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--qb-text);
}

.qb-valve-card.nab-special {
    border-color: var(--qb-nab);
    background: var(--qb-nab-bg);
}

.qb-valve-card.nab-special:hover {
    border-color: var(--qb-nab);
    box-shadow: 0 8px 24px rgba(124, 58, 237, 0.2);
}

.qb-valve-card.nab-special.selected {
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.08), rgba(124, 58, 237, 0.12));
    box-shadow: 0 4px 16px rgba(124, 58, 237, 0.25);
}

.qb-valve-card.nab-special .qb-valve-icon {
    color: var(--qb-nab);
}

.qb-nab-badge {
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--qb-nab);
    color: white;
    font-size: 0.6rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.qb-form-label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--qb-text);
    margin-bottom: 0.5rem;
}

.qb-form-label .required {
    color: var(--qb-accent);
    margin-left: 2px;
}

.qb-select {
    width: 100%;
    padding: 0.85rem 1rem;
    border: 2px solid var(--qb-border);
    border-radius: 10px;
    font-size: 0.95rem;
    font-family: inherit;
    background: var(--qb-surface);
    color: var(--qb-text);
    cursor: pointer;
    transition: border-color 0.2s ease;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2364748b'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 20px;
}

.qb-select:focus {
    outline: none;
    border-color: var(--qb-accent);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.qb-select:disabled {
    background-color: var(--qb-background);
    cursor: not-allowed;
    opacity: 0.7;
}

.qb-input {
    width: 100%;
    padding: 0.85rem 1rem;
    border: 2px solid var(--qb-border);
    border-radius: 10px;
    font-size: 0.95rem;
    font-family: inherit;
    background: var(--qb-surface);
    color: var(--qb-text);
    transition: border-color 0.2s ease;
    box-sizing: border-box;
}

.qb-input:focus {
    outline: none;
    border-color: var(--qb-accent);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

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

.qb-form-row-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1rem;
}

/* ---- NAB Material Highlight ---- */
.qb-material-card {
    background: var(--qb-surface);
    border: 2px solid var(--qb-border);
    border-radius: 12px;
    padding: 1.25rem;
    cursor: pointer;
    transition: all 0.25s ease;
}

.qb-material-card:hover {
    border-color: var(--qb-nab);
    box-shadow: 0 4px 16px rgba(124, 58, 237, 0.12);
}

.qb-material-card.selected {
    border-color: var(--qb-nab);
    background: var(--qb-nab-bg);
}

.qb-material-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--qb-text);
    margin-bottom: 0.25rem;
}

.qb-material-card p {
    font-size: 0.8rem;
    color: var(--qb-text-light);
    margin: 0;
}

.qb-materials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

/* ---- Summary Panel ---- */
.qb-summary {
    background: var(--qb-surface);
    border: 2px solid var(--qb-border);
    border-radius: 16px;
    overflow: hidden;
}

.qb-summary-header {
    background: linear-gradient(135deg, var(--qb-primary), #1e3a5f);
    color: white;
    padding: 1.5rem 2rem;
}

.qb-summary-header h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0 0 0.25rem 0;
}

.qb-summary-header p {
    font-size: 0.85rem;
    opacity: 0.8;
    margin: 0;
}

.qb-summary-body {
    padding: 2rem;
}

.qb-summary-grid {
    display: grid;
    gap: 0;
}

.qb-summary-row {
    display: flex;
    justify-content: space-between;
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--qb-border);
}

.qb-summary-row:last-child {
    border-bottom: none;
}

.qb-summary-label {
    font-weight: 600;
    color: var(--qb-text-light);
    font-size: 0.9rem;
}

.qb-summary-value {
    font-weight: 700;
    color: var(--qb-text);
    font-size: 0.95rem;
    text-align: right;
}

.qb-summary-value.nab {
    color: var(--qb-nab);
}

.qb-summary-spec {
    background: var(--qb-background);
    border-radius: 10px;
    padding: 1.25rem;
    margin-top: 1.5rem;
}

.qb-summary-spec-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--qb-text-light);
    margin-bottom: 0.5rem;
}

.qb-summary-spec-text {
    font-size: 1rem;
    font-weight: 700;
    color: var(--qb-primary);
    line-height: 1.5;
}

.qb-summary-json {
    margin-top: 1.5rem;
    padding: 1rem;
    background: #1e293b;
    border-radius: 10px;
    overflow-x: auto;
}

.qb-summary-json pre {
    margin: 0;
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    color: #e2e8f0;
    white-space: pre-wrap;
    word-break: break-all;
}

.qb-copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--qb-accent);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 1rem;
}

.qb-copy-btn:hover {
    background: var(--qb-accent-hover);
    transform: translateY(-1px);
}

.qb-copy-btn.copied {
    background: var(--qb-success);
}

/* ---- Navigation Buttons ---- */
.qb-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 2.5rem;
    gap: 1rem;
}

.qb-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.9rem 2rem;
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.25s ease;
    border: none;
    font-family: inherit;
}

.qb-btn-primary {
    background: var(--qb-accent);
    color: white;
    box-shadow: 0 4px 14px rgba(220, 38, 38, 0.3);
}

.qb-btn-primary:hover {
    background: var(--qb-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(220, 38, 38, 0.4);
}

.qb-btn-primary:disabled {
    background: var(--qb-border);
    color: var(--qb-text-light);
    box-shadow: none;
    cursor: not-allowed;
    transform: none;
}

.qb-btn-secondary {
    background: var(--qb-surface);
    color: var(--qb-text);
    border: 2px solid var(--qb-border);
}

.qb-btn-secondary:hover {
    border-color: var(--qb-secondary);
    background: var(--qb-background);
}

.qb-btn-reset {
    background: transparent;
    color: var(--qb-text-light);
    border: none;
    padding: 0.9rem 1rem;
}

.qb-btn-reset:hover {
    color: var(--qb-accent);
}

/* ---- Contact Step ---- */
.qb-country-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.qb-country-chip {
    background: var(--qb-surface);
    border: 2px solid var(--qb-border);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.85rem;
    font-weight: 600;
}

.qb-country-chip:hover {
    border-color: var(--qb-accent);
}

.qb-country-chip.selected {
    border-color: var(--qb-accent);
    background: rgba(220, 38, 38, 0.05);
    color: var(--qb-accent);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .qb-stepper {
        margin-bottom: 2rem;
    }

    .qb-stepper::before,
    .qb-stepper-progress {
        top: 18px;
    }

    .qb-step-number {
        width: 38px;
        height: 38px;
        font-size: 0.9rem;
    }

    .qb-step-label {
        font-size: 0.65rem;
    }

    .qb-valve-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.75rem;
    }

    .qb-valve-card {
        padding: 1rem 0.5rem;
    }

    .qb-valve-icon {
        font-size: 1.6rem;
    }

    .qb-valve-name {
        font-size: 0.75rem;
    }

    .qb-form-row,
    .qb-form-row-3 {
        grid-template-columns: 1fr;
    }

    .qb-step-header h2 {
        font-size: 1.3rem;
    }

    .qb-nav {
        flex-wrap: wrap;
    }

    .qb-btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .qb-valve-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

/* ---- Success Animation ---- */
.qb-success {
    text-align: center;
    padding: 2rem;
}

.qb-success-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--qb-success), #047857);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    animation: qbSuccessPop 0.5s ease;
}

@keyframes qbSuccessPop {
    0% { transform: scale(0); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.qb-success-icon svg {
    width: 40px;
    height: 40px;
    fill: white;
}

.qb-success h3 {
    font-size: 1.5rem;
    color: var(--qb-primary);
    margin-bottom: 0.5rem;
}

.qb-success p {
    color: var(--qb-text-light);
}

/* ---- Hidden JSON Output ---- */
#qb-json-output {
    display: none;
}