/* =============================================
   CarX Discount Wheel — style.css
   Mobile-first, BEM naming, CSS variables
   ============================================= */

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

:root {
    --clr-primary:    #0F172A;
    --clr-secondary:  #2563EB;
    --clr-accent:     #F59E0B;
    --clr-success:    #10B981;
    --clr-error:      #EF4444;
    --clr-white:      #FFFFFF;

    --wheel-size:     300px;
    --font-heading:   'Poppins', 'Inter', system-ui, sans-serif;
    --font-body:      'Inter', system-ui, sans-serif;

    --ease-spin: cubic-bezier(0.17, 0.67, 0.12, 0.99);
    --transition: 0.2s ease;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-body);
    background: var(--clr-primary);
    color: var(--clr-white);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
}

/* ---- Background ---- */
.bg-gradient {
    position: fixed;
    inset: 0;
    background: radial-gradient(ellipse at 20% 50%, #1a2f6e 0%, transparent 60%),
                radial-gradient(ellipse at 80% 20%, #2d1b69 0%, transparent 50%),
                linear-gradient(135deg, #0F172A 0%, #1e2a45 50%, #0F172A 100%);
    z-index: 0;
    pointer-events: none;
}

.bg-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(37,99,235,0.15) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 0;
    animation: pulse-glow 4s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 0.6; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
}

/* ---- Overlay ---- */
.overlay {
    position: fixed;
    inset: 0;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem 1.5rem 5rem; /* bottom padding keeps content above fixed Markup badge */
    text-align: center;
    min-height: 100vh;
    min-height: 100dvh;
    overflow-y: auto;
}

/* ---- Logo ---- */
.overlay__logo {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -1px;
    color: var(--clr-white);
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 20px rgba(37,99,235,0.4);
}

.overlay__logo span { color: var(--clr-accent); }

/* ---- Headline ---- */
.overlay__headline {
    font-family: var(--font-heading);
    font-size: clamp(1.125rem, 3vw, 1.5rem);
    font-weight: 600;
    color: rgba(255,255,255,0.9);
    margin-bottom: 0.25rem;
    max-width: 480px;
    line-height: 1.35;
}

.overlay__sub {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.5);
    margin-bottom: 1.75rem;
}

/* ---- Wheel Wrapper ---- */
.wheel-wrapper {
    position: relative;
    width: var(--wheel-size);
    height: var(--wheel-size);
    margin: 0 auto 1.5rem;
    flex-shrink: 0;
}

/* Pointer / arrow */
.wheel-wrapper__pointer {
    position: absolute;
    top: -18px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 14px solid transparent;
    border-right: 14px solid transparent;
    border-top: 28px solid var(--clr-accent);
    filter: drop-shadow(0 4px 8px rgba(245,158,11,0.6));
    z-index: 5;
}

/* Outer ring */
.wheel-wrapper__ring {
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--clr-accent), #FCD34D, var(--clr-secondary));
    opacity: 0.25;
    animation: ring-spin 8s linear infinite;
    will-change: transform;
    backface-visibility: hidden;
}

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

/* Canvas */
.wheel__canvas {
    display: block;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    box-shadow:
        0 0 0 6px rgba(245,158,11,0.3),
        0 0 40px rgba(37,99,235,0.4),
        0 20px 60px rgba(0,0,0,0.5);
    cursor: grab;
    position: relative;
    z-index: 2;
    touch-action: none;
    -webkit-user-select: none;
    user-select: none;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    will-change: transform;
}

.wheel__canvas:active {
    cursor: grabbing;
}

/* Center hub */
.wheel-wrapper__hub {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--clr-primary);
    border: 4px solid var(--clr-accent);
    box-shadow: 0 0 20px rgba(245,158,11,0.4);
    z-index: 6;
}

/* ---- Spin Button ---- */
.wheel__button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 2.5rem;
    background: linear-gradient(135deg, var(--clr-accent) 0%, #FBBF24 100%);
    color: var(--clr-primary);
    font-family: var(--font-heading);
    font-size: 1.0625rem;
    font-weight: 700;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(245,158,11,0.4), 0 2px 8px rgba(0,0,0,0.2);
    transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.wheel__button:not(:disabled) {
    animation: btn-pulse 2.4s ease-in-out infinite;
}

.wheel__button:hover:not(:disabled) {
    animation: none;
    transform: translateY(-3px) scale(1.04);
    box-shadow: 0 16px 40px rgba(245,158,11,0.55), 0 0 0 6px rgba(245,158,11,0.12), 0 4px 12px rgba(0,0,0,0.25);
}

.wheel__button:active:not(:disabled) {
    animation: none;
    transform: translateY(0) scale(0.98);
}

.wheel__button--disabled,
.wheel__button:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
    animation: none;
}

@keyframes btn-pulse {
    0%, 100% {
        box-shadow: 0 8px 24px rgba(245,158,11,0.4), 0 2px 8px rgba(0,0,0,0.2);
        transform: translateY(0) scale(1);
    }
    50% {
        box-shadow: 0 10px 36px rgba(245,158,11,0.6), 0 0 0 8px rgba(245,158,11,0.1), 0 2px 8px rgba(0,0,0,0.2);
        transform: translateY(-2px) scale(1.02);
    }
}

/* ---- Result Banner ---- */
.result-banner {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    margin-top: 1.25rem;
    animation: fade-in-up 0.5s ease;
}

.result-banner--visible { display: flex; }

.result-banner__congrats {
    font-size: 0.9375rem;
    color: rgba(255,255,255,0.75);
    font-weight: 500;
}

.result-banner__discount {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 6vw, 3rem);
    font-weight: 800;
    color: var(--clr-accent);
    text-shadow: 0 2px 20px rgba(245,158,11,0.5);
    letter-spacing: -1px;
}

.result-banner__label {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.6);
}

@keyframes fade-in-up {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ---- Modal ---- */
.modal-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(6px);
    z-index: 100;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    animation: fade-in 0.25s ease;
}

.modal-backdrop--visible { display: flex; }

@keyframes fade-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.modal {
    background: #fff;
    color: #1E293B;
    border-radius: 20px;
    width: 100%;
    max-width: 440px;
    padding: 2rem;
    box-shadow: 0 30px 80px rgba(0,0,0,0.4);
    animation: modal-in 0.35s var(--ease-spin);
    position: relative;
}

@keyframes modal-in {
    from { opacity: 0; transform: scale(0.88) translateY(24px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
}

.modal__badge {
    display: inline-block;
    background: linear-gradient(135deg, #FFFBEB, #FEF3C7);
    border: 1px solid #FCD34D;
    color: #92400E;
    font-size: 0.8125rem;
    font-weight: 600;
    padding: 0.25rem 0.875rem;
    border-radius: 20px;
    margin-bottom: 1rem;
}

.modal__title {
    font-family: var(--font-heading);
    font-size: 1.4375rem;
    font-weight: 700;
    color: #0F172A;
    margin-bottom: 0.25rem;
    line-height: 1.3;
}

.modal__sub {
    font-size: 0.875rem;
    color: #64748B;
    margin-bottom: 1.5rem;
}

.modal__discount-tag {
    display: inline-block;
    font-weight: 700;
    color: var(--clr-secondary);
}

.modal__desc {
    font-size: 0.8125rem;
    color: #94A3B8;
    line-height: 1.5;
    margin-top: -0.75rem;
    margin-bottom: 1.25rem;
    text-align: center;
}

/* Form inside modal */
.modal__form { display: flex; flex-direction: column; gap: 0.875rem; }

.field {
    display: flex;
    flex-direction: column;
    gap: 0.3125rem;
}

.field__label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: #374151;
}

.field__input {
    padding: 0.625rem 0.875rem;
    border: 1.5px solid #E2E8F0;
    border-radius: 10px;
    font-size: 0.9375rem;
    color: #1E293B;
    background: #F8FAFC;
    transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
    font-family: var(--font-body);
}

.field__input:focus {
    outline: none;
    border-color: var(--clr-secondary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.field__input--error { border-color: var(--clr-error); }

.field__error {
    display: none;
    font-size: 0.75rem;
    color: var(--clr-error);
}

.field__error--visible { display: block; }

/* Submit button */
.modal__submit {
    padding: 0.875rem;
    background: linear-gradient(135deg, var(--clr-secondary) 0%, #1D4ED8 100%);
    color: #fff;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    margin-top: 0.25rem;
    box-shadow: 0 4px 16px rgba(37,99,235,0.35);
    transition: transform var(--transition), box-shadow var(--transition);
}

.modal__submit:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(37,99,235,0.45);
}

.modal__submit:disabled {
    opacity: 0.65;
    cursor: not-allowed;
    transform: none;
}

/* ---- Success State ---- */
.success-state {
    display: none;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1rem 0;
    animation: fade-in-up 0.4s ease;
}

.success-state--visible { display: flex; }

.success-state__icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ECFDF5, #D1FAE5);
    border: 2px solid #A7F3D0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 1rem;
}

.success-state__title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: #065F46;
    margin-bottom: 0.5rem;
}

.success-state__text {
    font-size: 0.9rem;
    color: #6B7280;
    max-width: 280px;
    line-height: 1.5;
}

/* ---- Spinner ---- */
.spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.65s linear infinite;
    vertical-align: middle;
}

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

/* ---- Responsive ---- */
@media (min-width: 480px) {
    :root { --wheel-size: 360px; }
}

@media (min-width: 768px) {
    :root { --wheel-size: 420px; }

    .overlay__logo { font-size: 2.5rem; }
    .overlay__headline { font-size: 1.625rem; }
}

@media (min-width: 1024px) {
    :root { --wheel-size: 460px; }
}

@media (min-width: 1440px) {
    :root { --wheel-size: 500px; }
}

/* ---- Already Played ---- */
.already-played {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.75rem;
    font-size: 0.875rem;
    color: rgba(255,255,255,0.55);
}

.already-played--visible { display: flex; }

/* ---- Markup Attribution ---- */
.markup-credit {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    position: fixed;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 50;
    text-decoration: none;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 0.35rem 0.875rem;
    border-radius: 50px;
    transition: background 0.2s, border-color 0.2s;
    white-space: nowrap;
}

.markup-credit:hover {
    background: rgba(255,255,255,0.09);
    border-color: rgba(255,255,255,0.15);
}

.markup-credit__logo {
    height: 16px;
    width: auto;
    filter: brightness(0) invert(1);
    opacity: 0.55;
    display: block;
}

.markup-credit__text {
    font-size: 0.6875rem;
    color: rgba(255,255,255,0.4);
    font-weight: 500;
    letter-spacing: 0.02em;
}