/* =============================================
   Donation Plugin – Front-end Styles
   shadcn/ui inspired design system
   ============================================= */

/* ---- Reset & Custom Properties ---- */
.dnp-root {
    --dnp-accent: #18181b;
    --dnp-accent-rgb: 24, 24, 27;
    --dnp-radius: 12px;
    --dnp-radius-sm: 8px;
    --dnp-radius-xs: 6px;
    --dnp-border: #e4e4e7;
    --dnp-bg: #ffffff;
    --dnp-surface: #fafafa;
    --dnp-text: #09090b;
    --dnp-muted: #71717a;
    --dnp-muted-bg: #f4f4f5;
    --dnp-success: #16a34a;
    --dnp-error-bg: #fef2f2;
    --dnp-error-border: #fca5a5;
    --dnp-error-text: #b91c1c;
    --dnp-shadow: 0 1px 3px 0 rgba(0,0,0,.07), 0 1px 2px -1px rgba(0,0,0,.07);
    --dnp-shadow-md: 0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -2px rgba(0,0,0,.1);
    --dnp-transition: all .15s cubic-bezier(.4,0,.2,1);

    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    -webkit-font-smoothing: antialiased;
    max-width: 480px;
    margin: 0 auto;
    padding: 1rem;
}

/* ---- Card ---- */
.dnp-card {
    background: var(--dnp-bg);
    border: 1px solid var(--dnp-border);
    border-radius: var(--dnp-radius);
    box-shadow: var(--dnp-shadow-md);
    overflow: hidden;
}

/* ---- Header ---- */
.dnp-header {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 28px 28px 20px;
    border-bottom: 1px solid var(--dnp-border);
    background: var(--dnp-surface);
}

.dnp-icon-wrap {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    background: var(--dnp-accent);
    color: #fff;
    border-radius: var(--dnp-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.dnp-header-text { flex: 1; }

.dnp-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dnp-text);
    margin: 0 0 4px;
    line-height: 1.2;
}

.dnp-subtitle {
    font-size: 0.875rem;
    color: var(--dnp-muted);
    margin: 0;
    line-height: 1.5;
}

/* ---- Steps Indicator ---- */
.dnp-steps {
    display: flex;
    align-items: center;
    padding: 18px 28px;
    gap: 0;
    border-bottom: 1px solid var(--dnp-border);
    background: var(--dnp-surface);
}

.dnp-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    flex-shrink: 0;
}

.dnp-step span {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--dnp-muted);
    letter-spacing: .03em;
    text-transform: uppercase;
    transition: var(--dnp-transition);
}

.dnp-step-dot {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid var(--dnp-border);
    background: var(--dnp-bg);
    transition: var(--dnp-transition);
    position: relative;
}

.dnp-step-active .dnp-step-dot {
    border-color: var(--dnp-accent);
    background: var(--dnp-accent);
    box-shadow: 0 0 0 4px rgba(var(--dnp-accent-rgb), .15);
}

.dnp-step-active span { color: var(--dnp-text); font-weight: 600; }

.dnp-step-done .dnp-step-dot {
    border-color: var(--dnp-accent);
    background: var(--dnp-accent);
}

.dnp-step-done .dnp-step-dot::after {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center/14px no-repeat;
}

.dnp-step-line {
    flex: 1;
    height: 2px;
    background: var(--dnp-border);
    margin: 0 8px;
    margin-bottom: 18px;
    transition: var(--dnp-transition);
    border-radius: 2px;
}

.dnp-step-line.dnp-line-done {
    background: var(--dnp-accent);
}

/* ---- Step Panels ---- */
.dnp-step-panel {
    padding: 24px 28px 28px;
    animation: dnp-fadein .2s ease;
}

@keyframes dnp-fadein {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

.dnp-hidden { display: none !important; }

/* ---- Preset Amount Grid ---- */
.dnp-preset-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-bottom: 18px;
}

.dnp-preset-btn {
    padding: 14px 12px;
    border: 1.5px solid var(--dnp-border);
    border-radius: var(--dnp-radius-sm);
    background: var(--dnp-bg);
    color: var(--dnp-text);
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--dnp-transition);
    text-align: center;
    line-height: 1;
}

.dnp-preset-btn:hover {
    border-color: var(--dnp-accent);
    background: rgba(var(--dnp-accent-rgb), .04);
    color: var(--dnp-accent);
}

.dnp-preset-btn.dnp-selected {
    border-color: var(--dnp-accent);
    background: var(--dnp-accent);
    color: #fff;
    box-shadow: 0 0 0 3px rgba(var(--dnp-accent-rgb), .2);
}

/* ---- Divider ---- */
.dnp-divider {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 16px 0;
    color: var(--dnp-muted);
    font-size: 0.8rem;
}
.dnp-divider::before,
.dnp-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--dnp-border);
}

/* ---- Custom Amount Input ---- */
.dnp-custom-wrap {
    position: relative;
    margin-bottom: 20px;
}

.dnp-currency-symbol {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--dnp-muted);
    font-weight: 600;
    font-size: 1rem;
    pointer-events: none;
}

.dnp-custom-input {
    width: 100%;
    padding: 13px 14px 13px 32px;
    border: 1.5px solid var(--dnp-border);
    border-radius: var(--dnp-radius-sm);
    font-size: 1rem;
    color: var(--dnp-text);
    background: var(--dnp-bg);
    transition: var(--dnp-transition);
    box-sizing: border-box;
    outline: none;
    -moz-appearance: textfield;
}
.dnp-custom-input::-webkit-outer-spin-button,
.dnp-custom-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.dnp-custom-input:focus {
    border-color: var(--dnp-accent);
    box-shadow: 0 0 0 3px rgba(var(--dnp-accent-rgb), .12);
}

/* ---- Buttons ---- */
.dnp-btn-primary,
.dnp-btn-donate,
.dnp-btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 20px;
    border-radius: var(--dnp-radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--dnp-transition);
    border: none;
    outline: none;
    line-height: 1;
}

.dnp-btn-primary {
    width: 100%;
    background: var(--dnp-accent);
    color: #fff;
}
.dnp-btn-primary:hover:not(:disabled) {
    opacity: .88;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(var(--dnp-accent-rgb), .35);
}
.dnp-btn-primary:disabled {
    opacity: .4;
    cursor: not-allowed;
}

.dnp-btn-donate {
    flex: 1;
    background: var(--dnp-accent);
    color: #fff;
    font-size: 1rem;
}
.dnp-btn-donate:hover {
    opacity: .88;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(var(--dnp-accent-rgb), .4);
}

.dnp-btn-ghost {
    background: transparent;
    color: var(--dnp-muted);
    border: 1.5px solid var(--dnp-border);
    padding: 12px 16px;
}
.dnp-btn-ghost:hover {
    background: var(--dnp-muted-bg);
    color: var(--dnp-text);
    border-color: #d4d4d8;
}

.dnp-row-btns {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

/* ---- Form Fields ---- */
.dnp-field-group { margin-bottom: 16px; }

.dnp-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--dnp-text);
    margin-bottom: 6px;
}

.dnp-input {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid var(--dnp-border);
    border-radius: var(--dnp-radius-sm);
    font-size: 0.95rem;
    color: var(--dnp-text);
    background: var(--dnp-bg);
    transition: var(--dnp-transition);
    box-sizing: border-box;
    outline: none;
}
.dnp-input::placeholder { color: #a1a1aa; }
.dnp-input:focus {
    border-color: var(--dnp-accent);
    box-shadow: 0 0 0 3px rgba(var(--dnp-accent-rgb), .12);
}

/* ---- Optional note ---- */
.dnp-optional-note {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--dnp-muted);
    background: var(--dnp-muted-bg);
    padding: 9px 13px;
    border-radius: var(--dnp-radius-xs);
    margin-bottom: 18px;
}

/* ---- Amount Summary ---- */
.dnp-amount-summary {
    font-size: 0.875rem;
    color: var(--dnp-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    background: rgba(var(--dnp-accent-rgb), .05);
    border: 1px solid rgba(var(--dnp-accent-rgb), .15);
    border-radius: var(--dnp-radius-xs);
    margin-top: 6px;
}
.dnp-amount-summary strong { color: var(--dnp-text); }
.dnp-edit-amount {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--dnp-accent);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0;
    text-decoration: underline;
}

/* ---- Confirm Card ---- */
.dnp-confirm-card {
    border: 1px solid var(--dnp-border);
    border-radius: var(--dnp-radius-sm);
    padding: 20px;
    background: var(--dnp-surface);
    margin-bottom: 6px;
}

.dnp-confirm-heart {
    font-size: 1.5rem;
    color: var(--dnp-accent);
    margin-bottom: 14px;
}

.dnp-confirm-details { margin-bottom: 14px; }

.dnp-confirm-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--dnp-border);
    font-size: 0.9rem;
}
.dnp-confirm-row:last-child { border-bottom: none; }

.dnp-confirm-key { color: var(--dnp-muted); }
.dnp-confirm-val { font-weight: 600; color: var(--dnp-text); }
.dnp-confirm-amount { font-size: 1.1rem; color: var(--dnp-accent); }

.dnp-confirm-note {
    font-size: 0.8rem;
    color: var(--dnp-muted);
    margin: 0;
    line-height: 1.5;
}

/* ---- Secure Note ---- */
.dnp-secure-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    font-size: 0.75rem;
    color: #a1a1aa;
    margin-top: 12px;
}

/* ---- Error ---- */
.dnp-error {
    background: var(--dnp-error-bg);
    border: 1px solid var(--dnp-error-border);
    color: var(--dnp-error-text);
    border-radius: var(--dnp-radius-xs);
    padding: 11px 14px;
    font-size: 0.875rem;
    margin-bottom: 14px;
}

/* ---- Spinner ---- */
.dnp-spinner {
    animation: dnp-spin .8s linear infinite;
}
@keyframes dnp-spin { to { transform: rotate(360deg); } }

/* ---- Success Banner ---- */
.dnp-success-banner {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #f0fdf4;
    border: 1px solid #86efac;
    color: #15803d;
    border-radius: var(--dnp-radius-sm);
    padding: 14px 18px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 16px;
    animation: dnp-fadein .3s ease;
}

/* ---- Responsive ---- */
@media (max-width: 420px) {
    .dnp-root { padding: 0.5rem; }
    .dnp-header { padding: 20px 18px 16px; }
    .dnp-steps { padding: 14px 18px; }
    .dnp-step-panel { padding: 18px 18px 22px; }
    .dnp-preset-grid { grid-template-columns: repeat(2, 1fr); }
}