/* CSS RESET & VARIABLES */
:root {
    --primary: #ffffff;
    --primary-hover: #e2e8f0;
    --bg-color: #050505;
    --card-bg: #111111;
    --input-bg: #1a1a1a;
    --border-color: #333333;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #8b929a; /* Metallic/steel hue */
    --error: #ef4444;
    --success: #10b981;
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;
    --border-radius-lg: 16px;
    --border-radius-md: 8px;
    --border-radius-sm: 4px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.hidden {
    display: none !important;
}

/* LAYOUT */
.page-wrapper {
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: radial-gradient(circle at 50% 0%, #1a1a1a 0%, #050505 100%);
}

.main-card {
    width: 100%;
    max-width: 560px;
    background-color: var(--card-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255,255,255,0.05);
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
}

/* HERO SECTION */
.hero-section {
    position: relative;
    height: 240px;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: flex-end;
    padding: 30px;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, var(--card-bg) 0%, rgba(17,17,17,0.2) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    width: 100%;
}

.brand-eyebrow {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    display: block;
    margin-bottom: 8px;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--primary);
}

/* CONTENT SECTION */
.content-section {
    padding: 30px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 24px;
}

/* FORM STYLES */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.input-group {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
}

.required-asterisk {
    color: var(--error);
    margin-left: 2px;
}

input[type="text"],
input[type="email"],
input[type="tel"] {
    width: 100%;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-main);
    padding: 14px 16px;
    font-size: 1rem;
    font-family: var(--font-body);
    transition: var(--transition);
}

input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent);
}

input::placeholder {
    color: #555;
}

/* CHECKBOX STYLES */
.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 24px;
    margin-top: 8px;
}

.checkbox-group input[type="checkbox"] {
    appearance: none;
    background-color: var(--input-bg);
    margin: 0;
    font: inherit;
    color: currentColor;
    width: 20px;
    height: 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    display: grid;
    place-content: center;
    cursor: pointer;
    flex-shrink: 0;
    margin-top: 2px;
    transition: var(--transition);
}

.checkbox-group input[type="checkbox"]::before {
    content: "";
    width: 12px;
    height: 12px;
    transform: scale(0);
    transition: 120ms transform ease-in-out;
    box-shadow: inset 1em 1em var(--bg-color);
    background-color: var(--bg-color);
    transform-origin: center;
    clip-path: polygon(14% 44%, 0 65%, 50% 100%, 100% 16%, 80% 0%, 43% 62%);
}

.checkbox-group input[type="checkbox"]:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

.checkbox-group input[type="checkbox"]:checked::before {
    transform: scale(1);
}

.checkbox-group input[type="checkbox"]:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent);
}

.checkbox-group label {
    font-size: 0.85rem;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1.5;
}

/* BUTTONS */
.btn-primary {
    width: 100%;
    background-color: var(--primary);
    color: var(--bg-color);
    border: none;
    border-radius: var(--border-radius-md);
    padding: 16px;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 10px;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 10px 16px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-secondary:hover {
    background-color: rgba(255,255,255,0.05);
    border-color: var(--text-muted);
}

.shop-btn {
    text-decoration: none;
    margin-top: 20px;
}

/* SUCCESS & COUPON */
.success-header {
    text-align: center;
    margin-bottom: 30px;
}

.success-icon {
    width: 48px;
    height: 48px;
    color: var(--success);
    margin-bottom: 16px;
}

.success-header h2 {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    margin-bottom: 12px;
}

.success-header p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.coupon-card {
    background: linear-gradient(145deg, var(--input-bg) 0%, #151515 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.coupon-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, #475569, #e2e8f0, #475569);
}

.coupon-label {
    display: block;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.coupon-code-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background-color: var(--bg-color);
    padding: 16px;
    border-radius: var(--border-radius-md);
    border: 1px dashed var(--border-color);
    margin-bottom: 16px;
}

.coupon-code {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--primary);
    word-break: break-all;
}

.coupon-expiration {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 12px;
}

.qr-container {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.qr-container img {
    max-width: 150px;
    height: auto;
    border-radius: 8px;
    background: white;
    padding: 8px;
}

.qr-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 8px;
}

/* SHARE CARD */
.share-card {
    margin-top: 24px;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 20px;
}

.share-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    font-family: var(--font-heading);
}

.share-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.share-input-group {
    display: flex;
    gap: 8px;
}

.share-input-group input {
    flex: 1;
}

/* UTILITIES */
.error-msg {
    background-color: rgba(239, 68, 68, 0.1);
    color: #fca5a5;
    padding: 12px 16px;
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(239, 68, 68, 0.2);
    font-size: 0.9rem;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

#wbx-powered-by-slot {
    padding: 20px 0;
    display: flex;
    justify-content: center;
}

/* SPINNER ANIMATION */
.spinner {
    animation: rotate 2s linear infinite;
    width: 20px;
    height: 20px;
}
.spinner .path {
    stroke: var(--bg-color);
    stroke-linecap: round;
    animation: dash 1.5s ease-in-out infinite;
}
@keyframes rotate { 100% { transform: rotate(360deg); } }
@keyframes dash {
    0% { stroke-dasharray: 1, 150; stroke-dashoffset: 0; }
    50% { stroke-dasharray: 90, 150; stroke-dashoffset: -35; }
    100% { stroke-dasharray: 90, 150; stroke-dashoffset: -124; }
}

/* RESPONSIVE */
@media (max-width: 600px) {
    .page-wrapper {
        padding: 0;
        align-items: flex-start;
    }
    .main-card {
        border-radius: 0;
        min-height: 100vh;
        border: none;
        box-shadow: none;
    }
    .hero-section {
        height: 220px;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .coupon-code-wrap {
        flex-direction: column;
    }
    .share-input-group {
        flex-direction: column;
    }
}