/* =============================================================================
   WEBUNCAPPED DIGITAL MARKETING PRICING CALCULATOR
   style.css
   Mobile-first, premium SaaS aesthetic (glassmorphism, soft shadows, gradients)
============================================================================= */

/* -----------------------------------------------------------------------------
   1. DESIGN TOKENS
----------------------------------------------------------------------------- */
:root {
    --color-primary: #0A2342;
    --color-primary-light: #123566;
    --color-accent: #007BFF;
    --color-accent-light: #4da3ff;
    --color-bg: #F5F8FC;
    --color-white: #ffffff;
    --color-text: #16213E;
    --color-muted: #64748B;
    --color-border: #E2E8F0;
    --color-success: #16A34A;
    --color-error: #DC2626;

    --gradient-brand: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    --gradient-soft: linear-gradient(135deg, rgba(10,35,66,0.06) 0%, rgba(0,123,255,0.08) 100%);

    --shadow-sm: 0 2px 8px rgba(10, 35, 66, 0.06);
    --shadow-md: 0 8px 24px rgba(10, 35, 66, 0.10);
    --shadow-lg: 0 20px 50px rgba(10, 35, 66, 0.16);
    --shadow-glow: 0 0 0 4px rgba(0, 123, 255, 0.12);

    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-pill: 999px;

    --font-heading: 'Sora', sans-serif;
    --font-body: 'Inter', sans-serif;

    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* -----------------------------------------------------------------------------
   2. RESET
----------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
a { color: inherit; text-decoration: none; }
input, select, textarea { font-family: inherit; }

::selection { background: var(--color-accent-light); color: #fff; }

/* Focus visibility for accessibility (WCAG AA) */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* -----------------------------------------------------------------------------
   3. LAYOUT SHELL
----------------------------------------------------------------------------- */
.wu-app {
    min-height: 100vh;
    background:
        radial-gradient(circle at 10% 10%, rgba(0,123,255,0.08), transparent 40%),
        radial-gradient(circle at 90% 90%, rgba(10,35,66,0.08), transparent 40%),
        var(--color-bg);
}

.wu-container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* -----------------------------------------------------------------------------
   4. HEADER
----------------------------------------------------------------------------- */
.wu-header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(16px) saturate(160%);
    background: rgba(255, 255, 255, 0.75);
    border-bottom: 1px solid rgba(226, 232, 240, 0.7);
}

.wu-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
}

.wu-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--color-primary);
}

.wu-logo__mark {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: var(--gradient-brand);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.1rem;
    box-shadow: var(--shadow-sm);
}

.wu-header__tag {
    font-size: 0.8rem;
    color: var(--color-muted);
    display: none;
}

@media (min-width: 640px) {
    .wu-header__tag { display: block; }
}

/* -----------------------------------------------------------------------------
   5. HERO
----------------------------------------------------------------------------- */
.wu-hero {
    text-align: center;
    padding: 48px 20px 24px;
}

.wu-hero h1 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: clamp(1.8rem, 4vw, 2.75rem);
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

.wu-hero p {
    margin-top: 12px;
    color: var(--color-muted);
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.wu-promo-banner {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #ff5757, #ff8a3d);
    color: #fff;
    font-weight: 700;
    font-size: 0.85rem;
    padding: 8px 18px;
    border-radius: var(--radius-pill);
    box-shadow: var(--shadow-md);
    margin-bottom: 18px;
    animation: wuPulseBadge 2.4s ease-in-out infinite;
}

/* -----------------------------------------------------------------------------
   6. PROGRESS BAR
----------------------------------------------------------------------------- */
.wu-progress {
    max-width: 720px;
    margin: 32px auto 0;
    padding: 0 20px;
}

.wu-progress__track {
    position: relative;
    height: 6px;
    background: var(--color-border);
    border-radius: var(--radius-pill);
    overflow: hidden;
}

.wu-progress__fill {
    position: absolute;
    inset: 0;
    width: 25%;
    background: var(--gradient-brand);
    border-radius: var(--radius-pill);
    transition: width 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.wu-progress__steps {
    display: flex;
    justify-content: space-between;
    margin-top: 14px;
}

.wu-progress__step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--color-muted);
    flex: 1;
    position: relative;
}

.wu-progress__step-num {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--color-muted);
    transition: var(--transition);
}

.wu-progress__step.is-active .wu-progress__step-num {
    border-color: var(--color-accent);
    color: var(--color-accent);
    box-shadow: var(--shadow-glow);
}

.wu-progress__step.is-complete .wu-progress__step-num {
    background: var(--gradient-brand);
    border-color: transparent;
    color: #fff;
}

.wu-progress__step.is-active span:last-child,
.wu-progress__step.is-complete span:last-child {
    color: var(--color-primary);
    font-weight: 600;
}

/* -----------------------------------------------------------------------------
   7. MAIN GRID: FORM + LIVE SUMMARY
----------------------------------------------------------------------------- */
.wu-main {
    padding: 32px 0 80px;
}

.wu-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    align-items: start;
}

@media (min-width: 1024px) {
    .wu-grid {
        grid-template-columns: 1.6fr 1fr;
        gap: 32px;
    }
}

/* -----------------------------------------------------------------------------
   8. GLASS CARD
----------------------------------------------------------------------------- */
.wu-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(18px) saturate(160%);
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 28px;
}

@media (min-width: 640px) {
    .wu-card { padding: 36px; }
}

.wu-step { display: none; animation: wuFadeUp 0.45s ease both; }
.wu-step.is-active { display: block; }

@keyframes wuFadeUp {
    from { opacity: 0; transform: translateY(14px); }
    to { opacity: 1; transform: translateY(0); }
}

.wu-step__title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: 6px;
}

.wu-step__subtitle {
    color: var(--color-muted);
    margin-bottom: 28px;
    font-size: 0.95rem;
}

/* -----------------------------------------------------------------------------
   9. FLOATING LABEL FORM FIELDS
----------------------------------------------------------------------------- */
.wu-field {
    position: relative;
    margin-bottom: 22px;
}

.wu-field input,
.wu-field select {
    width: 100%;
    padding: 18px 16px 8px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: #fff;
    font-size: 1rem;
    color: var(--color-text);
    transition: var(--transition);
}

.wu-field input:focus,
.wu-field select:focus {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-glow);
    outline: none;
}

.wu-field label {
    position: absolute;
    left: 16px;
    top: 16px;
    color: var(--color-muted);
    font-size: 1rem;
    pointer-events: none;
    transition: var(--transition);
    background: transparent;
}

.wu-field input:focus + label,
.wu-field input:not(:placeholder-shown) + label,
.wu-field select:focus + label,
.wu-field select.has-value + label {
    top: 6px;
    font-size: 0.72rem;
    color: var(--color-accent);
    font-weight: 600;
}

.wu-field__error {
    display: none;
    color: var(--color-error);
    font-size: 0.8rem;
    margin-top: 6px;
    align-items: center;
    gap: 6px;
}

.wu-field.has-error input,
.wu-field.has-error select {
    border-color: var(--color-error);
}

.wu-field.has-error .wu-field__error { display: flex; }

.wu-field.is-valid input,
.wu-field.is-valid select { border-color: var(--color-success); }

.wu-field-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4px 20px;
}

@media (min-width: 640px) {
    .wu-field-grid.cols-2 { grid-template-columns: 1fr 1fr; }
}

/* Honeypot (hidden from real users, present for bots) */
.wu-honeypot {
    position: absolute;
    left: -9999px;
    top: -9999px;
    width: 1px;
    height: 1px;
    opacity: 0;
}

/* -----------------------------------------------------------------------------
   10. SERVICE CARDS (STEP 2)
----------------------------------------------------------------------------- */
.wu-services {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

@media (min-width: 640px) {
    .wu-services { grid-template-columns: 1fr 1fr; }
}

.wu-service {
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    background: #fff;
    overflow: hidden;
    transition: var(--transition);
}

.wu-service:hover { box-shadow: var(--shadow-sm); transform: translateY(-2px); }

.wu-service.is-selected {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-glow);
}

.wu-service__head {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
}

.wu-service__icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: var(--gradient-soft);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.wu-service__name {
    font-weight: 600;
    color: var(--color-primary);
    flex: 1;
}

.wu-service__from {
    font-size: 0.78rem;
    color: var(--color-muted);
}

.wu-checkbox {
    width: 22px;
    height: 22px;
    border-radius: 7px;
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    transition: var(--transition);
    flex-shrink: 0;
}

.wu-service.is-selected .wu-checkbox {
    background: var(--gradient-brand);
    border-color: transparent;
}

.wu-service__body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
    border-top: 1px solid transparent;
}

.wu-service.is-selected .wu-service__body {
    max-height: 500px;
    border-top-color: var(--color-border);
}

.wu-tier-list {
    padding: 14px 16px 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.wu-tier {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.wu-tier:hover { border-color: var(--color-accent-light); }

.wu-tier.is-active {
    border-color: var(--color-accent);
    background: var(--gradient-soft);
    font-weight: 600;
}

.wu-tier__price { color: var(--color-accent); font-weight: 700; }

/* -----------------------------------------------------------------------------
   11. TIMEFRAME OPTIONS (STEP 3)
----------------------------------------------------------------------------- */
.wu-timeframes {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

@media (min-width: 640px) {
    .wu-timeframes { grid-template-columns: 1fr 1fr; }
}

.wu-timeframe {
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    background: #fff;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    transition: var(--transition);
}

.wu-timeframe:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }

.wu-timeframe.is-selected {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-glow);
    background: var(--gradient-soft);
}

.wu-timeframe__icon {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background: var(--gradient-brand);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

/* -----------------------------------------------------------------------------
   12. QUOTATION SUMMARY (STEP 4 + SIDE PANEL)
----------------------------------------------------------------------------- */
.wu-summary {
    position: relative;
}

@media (min-width: 1024px) {
    .wu-summary { position: sticky; top: 96px; }
}

.wu-summary__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
}

.wu-summary__header h3 {
    font-family: var(--font-heading);
    color: var(--color-primary);
    font-size: 1.1rem;
}

.wu-summary__badge {
    font-size: 0.7rem;
    background: var(--gradient-brand);
    color: #fff;
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    font-weight: 600;
}

.wu-summary__empty {
    text-align: center;
    color: var(--color-muted);
    font-size: 0.9rem;
    padding: 30px 10px;
}

.wu-line-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px dashed var(--color-border);
    font-size: 0.9rem;
    gap: 8px;
}

.wu-line-item__name { color: var(--color-text); font-weight: 500; }
.wu-line-item__tier { color: var(--color-muted); font-size: 0.78rem; display: block; }
.wu-line-item__price { color: var(--color-primary); font-weight: 700; white-space: nowrap; }

.wu-summary__totals { margin-top: 16px; padding-top: 14px; border-top: 2px solid var(--color-border); }

.wu-summary__row {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    padding: 6px 0;
    color: var(--color-muted);
}

.wu-summary__row.grand {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--color-primary);
    border-top: 1px solid var(--color-border);
    margin-top: 8px;
    padding-top: 12px;
}

.wu-summary__meta {
    margin-top: 18px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.wu-meta-box {
    background: var(--gradient-soft);
    border-radius: var(--radius-sm);
    padding: 12px;
    text-align: center;
}

.wu-meta-box__label { font-size: 0.7rem; color: var(--color-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.wu-meta-box__value { font-weight: 700; color: var(--color-primary); font-size: 0.95rem; margin-top: 2px; }

/* -----------------------------------------------------------------------------
   13. BUTTONS
----------------------------------------------------------------------------- */
.wu-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.wu-btn--primary {
    background: var(--gradient-brand);
    color: #fff;
    box-shadow: var(--shadow-md);
}

.wu-btn--primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.wu-btn--primary:active { transform: translateY(0); }

.wu-btn--ghost {
    background: #fff;
    color: var(--color-primary);
    border: 1.5px solid var(--color-border);
}

.wu-btn--ghost:hover { border-color: var(--color-accent); color: var(--color-accent); }

.wu-btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none !important; }

.wu-btn__spinner {
    width: 16px;
    height: 16px;
    border: 2.5px solid rgba(255,255,255,0.4);
    border-top-color: #fff;
    border-radius: 50%;
    animation: wuSpin 0.7s linear infinite;
    display: none;
}

.wu-btn.is-loading .wu-btn__spinner { display: inline-block; }
.wu-btn.is-loading .wu-btn__label { opacity: 0.7; }

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

.wu-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 32px;
    gap: 12px;
}

/* -----------------------------------------------------------------------------
   14. TOOLTIPS
----------------------------------------------------------------------------- */
.wu-tooltip { position: relative; display: inline-flex; cursor: help; color: var(--color-muted); }

.wu-tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) scale(0.95);
    background: var(--color-primary);
    color: #fff;
    font-size: 0.72rem;
    padding: 8px 10px;
    border-radius: 8px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    z-index: 20;
}

.wu-tooltip:hover::after { opacity: 1; transform: translateX(-50%) scale(1); }

/* -----------------------------------------------------------------------------
   15. NOTIFICATIONS (TOASTS)
----------------------------------------------------------------------------- */
.wu-toasts {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 92vw;
}

.wu-toast {
    background: #fff;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    border-left: 4px solid var(--color-accent);
    animation: wuToastIn 0.3s ease both;
    min-width: 260px;
}

.wu-toast.error { border-left-color: var(--color-error); }
.wu-toast.success { border-left-color: var(--color-success); }

@keyframes wuToastIn {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

/* -----------------------------------------------------------------------------
   16. SUCCESS SCREEN
----------------------------------------------------------------------------- */
.wu-success {
    text-align: center;
    padding: 40px 10px;
}

.wu-success__icon {
    width: 84px;
    height: 84px;
    border-radius: 50%;
    background: var(--gradient-brand);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    margin: 0 auto 20px;
    animation: wuPop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

@keyframes wuPop {
    0% { transform: scale(0); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

.wu-success h2 { font-family: var(--font-heading); color: var(--color-primary); margin-bottom: 10px; }
.wu-success p { color: var(--color-muted); max-width: 480px; margin: 0 auto 24px; }

/* -----------------------------------------------------------------------------
   17. LOADING OVERLAY
----------------------------------------------------------------------------- */
.wu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 35, 66, 0.55);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 900;
}

.wu-overlay.is-active { display: flex; }

.wu-overlay__box {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 32px 40px;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.wu-overlay__spinner {
    width: 44px;
    height: 44px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    margin: 0 auto 16px;
    animation: wuSpin 0.8s linear infinite;
}

/* -----------------------------------------------------------------------------
   17B. DISCOUNT / PROMOTION STYLING
----------------------------------------------------------------------------- */
.wu-price-original {
    color: var(--color-muted);
    font-weight: 400;
    font-size: 0.85em;
    text-decoration-color: var(--color-error);
    margin-right: 4px;
}

.wu-price-discounted {
    color: var(--color-accent);
}

.wu-discount-badge {
    display: inline-block;
    background: linear-gradient(135deg, #ff5757, #ff8a3d);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 800;
    letter-spacing: 0.03em;
    padding: 2px 8px;
    border-radius: var(--radius-pill);
    margin-left: 6px;
    vertical-align: middle;
    animation: wuPulseBadge 2.4s ease-in-out infinite;
}

@keyframes wuPulseBadge {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.06); }
}

.wu-service__from .wu-price-original { display: inline-block; }

.wu-tier__price .wu-price-original { font-size: 0.8em; }

.wu-line-item__price .wu-price-original { font-size: 0.8em; display: block; margin-bottom: 2px; }

.wu-summary__row--discount {
    color: #ff5757 !important;
    font-weight: 700;
}

.wu-summary__row--discount span:last-child { color: #ff5757; }

.wu-meta-box--discount {
    background: linear-gradient(135deg, rgba(255,87,87,0.12), rgba(255,138,61,0.14));
}

.wu-meta-box--discount .wu-meta-box__value { color: #ff5757; }

/* -----------------------------------------------------------------------------
   18. FOOTER
----------------------------------------------------------------------------- */
.wu-footer {
    text-align: center;
    padding: 28px 20px 40px;
    color: var(--color-muted);
    font-size: 0.85rem;
}

.wu-footer a { color: var(--color-accent); font-weight: 600; }

/* -----------------------------------------------------------------------------
   19. UTILITIES / ACCESSIBILITY
----------------------------------------------------------------------------- */
.wu-sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

.wu-skip-link {
    position: absolute;
    left: -9999px;
    background: var(--color-primary);
    color: #fff;
    padding: 10px 16px;
    border-radius: 8px;
    z-index: 1000;
}

.wu-skip-link:focus { left: 12px; top: 12px; }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        transition-duration: 0.001ms !important;
    }
}