/* User Redeem Page Design System */
:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-soft: #eef2ff;

    --bg-main: #f9fafb;
    --bg-surface: #ffffff;

    --text-main: #0f172a;
    --text-muted: #64748b;
    --text-dim: #94a3b8;

    --border-base: #e2e8f0;

    --success: #10b981;
    --success-soft: #ecfdf5;
    --danger: #ef4444;
    --danger-soft: #fef2f2;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 9999px;

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, inherit;
    background-color: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    line-height: 1.5;
}

.container {
    max-width: 480px;
    width: 100%;
}

.header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.header h1 {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    color: var(--text-main);
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1rem;
    color: var(--text-muted);
}

.support-contact {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    margin-bottom: 1.25rem;
    padding: 1.1rem 1.15rem;
    background: linear-gradient(135deg, #ffffff 0%, #f6f8ff 100%);
    border: 1px solid rgba(99, 102, 241, 0.16);
    border-radius: 20px;
    box-shadow: 0 12px 30px -20px rgba(79, 70, 229, 0.45);
    text-align: left;
    position: relative;
    overflow: hidden;
}

.support-contact::before {
    content: "";
    position: absolute;
    top: -36px;
    right: -24px;
    width: 120px;
    height: 120px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.16) 0%, rgba(99, 102, 241, 0) 70%);
    pointer-events: none;
}

.support-contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    flex-shrink: 0;
    color: #fff;
    background: linear-gradient(135deg, var(--primary) 0%, #818cf8 100%);
    border-radius: 999px;
    box-shadow: 0 10px 20px -12px rgba(99, 102, 241, 0.9);
    position: relative;
    z-index: 1;
}

.support-contact-icon svg {
    width: 1.2rem;
    height: 1.2rem;
}

.support-contact-content {
    flex: 1;
    min-width: 0;
    position: relative;
    z-index: 1;
}

.support-contact-head {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 0.55rem;
}

.support-contact-label {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-main);
}

.support-contact-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.55rem;
    border-radius: var(--radius-full);
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 700;
}

.support-contact-row {
    display: flex;
    gap: 0.75rem;
    align-items: stretch;
    flex-wrap: wrap;
    margin-bottom: 0.55rem;
}

.support-contact-number-box {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.7rem 0.9rem;
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(99, 102, 241, 0.14);
    border-radius: 14px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.support-contact-number-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.04em;
}

.support-contact-number {
    font-size: 1.28rem;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: 0.06em;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.support-contact-copy {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    justify-content: center;
    min-height: 52px;
    padding: 0.75rem 1rem;
    border: 1px solid transparent;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary) 0%, #7c82ff 100%);
    color: #fff;
    font-size: 0.875rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-base);
    box-shadow: 0 12px 24px -16px rgba(99, 102, 241, 0.9);
}

.support-contact-copy:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 28px -18px rgba(99, 102, 241, 0.95);
}

.support-contact-copy:active {
    transform: translateY(0);
}

.support-contact-copy svg {
    width: 0.95rem;
    height: 0.95rem;
}

.support-contact-tip {
    font-size: 0.8125rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.support-contact--result {
    margin-top: 1.5rem;
    margin-bottom: 2rem;
}

.card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-base);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.4s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-align: center;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-base);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition-base);
    outline: none;
}

.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-soft);
}

.form-help {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.375rem;
}

.btn {
    width: 100%;
    padding: 0.75rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

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

.btn-primary:active {
    transform: translateY(0);
}

/* Toast */
.toast {
    position: fixed;
    top: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-base);
    display: none;
    z-index: 100;
}

.toast.show {
    display: block;
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--danger);
}

/* Steps */
.step {
    display: none;
}

.step.active {
    display: block;
}

/* Result */
.result-success {
    text-align: center;
}

.result-error {
    text-align: center;
}

.result-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.result-title {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.result-message {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.result-details {
    background-color: var(--bg-main);
    border-radius: var(--radius-md);
    padding: 1rem;
    text-align: left;
    margin-bottom: 2rem;
}

.result-detail-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-base);
}

.result-detail-item:last-child {
    border-bottom: none;
}

.result-detail-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.result-detail-value {
    font-size: 0.875rem;
    font-weight: 600;
}

/* Mobile Responsiveness */
@media (max-width: 480px) {
    body {
        padding: 1rem;
    }

    .header {
        margin-bottom: 1.5rem;
    }

    .header h1 {
        font-size: 1.5rem;
    }

    .card {
        padding: 1.5rem;
    }

    .support-contact {
        padding: 0.95rem;
    }

    .support-contact-row {
        flex-direction: column;
        align-items: stretch;
    }

    .support-contact-number-box {
        width: 100%;
        justify-content: space-between;
    }

    .support-contact-copy {
        width: 100%;
    }

    .toast {
        left: 1rem;
        right: 1rem;
        top: 1rem;
    }

    .result-title {
        font-size: 1.25rem;
    }
}