:root {
    --pic-modal-z-index: 9999;
    --pic-backdrop-color: rgba(17, 24, 39, 0.45);
    --pic-surface: #ffffff;
    --pic-text: #111827;
    --pic-muted-text: #4b5563;
    --pic-border: #e5e7eb;
    --pic-shadow: 0 18px 44px rgba(15, 23, 42, 0.16);
    --pic-primary: #2563eb;
    --pic-primary-hover: #1d4ed8;
    --pic-error: #dc2626;
    --pic-error-hover: #b91c1c;
    --pic-success: #16a34a;
    --pic-modal-transition: 500ms ease;
    --pic-modal-inner-translate-y: 10px;
}

.pic-modal {
    position: fixed;
    inset: 0;
    z-index: var(--pic-modal-z-index);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--pic-backdrop-color);
    transition: opacity var(--pic-modal-transition),
                visibility var(--pic-modal-transition);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.pic-modal.is-open {
    --pic-modal-inner-translate-y: 0px;
    opacity: 1;
    visibility: visible;
    pointer-events: all;
}

.pic-modal__backdrop {
    position: absolute;
    inset: 0;
    background: transparent;
}

.pic-modal__dialog {
    position: relative;
    width: min(560px, calc(100% - 1.5rem));
    border-radius: 16px;
    border: 1px solid var(--pic-border);
    background: var(--pic-surface);
    box-shadow: var(--pic-shadow);
    color: var(--pic-text);
    overflow: hidden;
    z-index: 1;
    transform: translateY(var(--pic-modal-inner-translate-y));
    transition: transform var(--pic-modal-transition);
}

.pic-modal__header,
.pic-modal__body,
.pic-modal__footer {
    padding-left: 1.2rem;
    padding-right: 1.2rem;
}

.pic-modal__header {
    min-height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--pic-border);
}

.pic-modal__title {
    margin: 0;
    font-size: 1.12rem;
    font-weight: 700;
    letter-spacing: 0.01em;
}

.pic-modal__close {
    width: 36px;
    height: 36px;
    border: 0;
    border-radius: 50%;
    background: transparent;
    color: var(--pic-muted-text);
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    transition: background-color 120ms ease, color 120ms ease;
}

.pic-modal__close:hover {
    background: #f3f4f6;
    color: var(--pic-text);
}

.pic-modal__body {
    padding-top: 1rem;
    padding-bottom: 1.1rem;
}

.pic-modal__message {
    margin: 0;
    color: var(--pic-muted-text);
    line-height: 1.75;
    word-break: break-word;
}

.pic-modal__footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.6rem;
    border-top: 1px solid var(--pic-border);
    padding-top: 0.95rem;
    padding-bottom: 1rem;
}

.pic-modal__btn {
    min-width: 92px;
    border: 1px solid transparent;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 700;
    line-height: 1;
    padding: 0.68rem 1rem;
    cursor: pointer;
    transition: transform 120ms ease,
                box-shadow 120ms ease,
                background-color 120ms ease;
}

.pic-modal__btn:hover {
    transform: translateY(-1px);
}

.pic-modal__btn:active {
    transform: translateY(0);
}

.pic-modal__btn--ghost {
    border-color: #d1d5db;
    background: #ffffff;
    color: var(--pic-text);
}

.pic-modal__btn--ghost:hover {
    background: #f9fafb;
}

.pic-modal__btn--primary {
    border-color: var(--pic-primary);
    background: var(--pic-primary);
    color: #ffffff;
}

.pic-modal__btn--primary:hover {
    background: var(--pic-primary-hover);
    box-shadow: 0 8px 16px rgba(37, 99, 235, 0.28);
}

.pic-modal--error .pic-modal__title {
    color: var(--pic-error);
}

.pic-modal--error .pic-modal__btn--primary {
    border-color: var(--pic-error);
    background: var(--pic-error);
}

.pic-modal--error .pic-modal__btn--primary:hover {
    background: var(--pic-error-hover);
    box-shadow: 0 8px 16px rgba(220, 38, 38, 0.24);
}

.pic-modal--success .pic-modal__title {
    color: var(--pic-success);
}

.pic-modal__btn.is-hidden {
    display: none;
}

/* ── RWD ── */
@media (max-width: 768px) {
    .pic-modal__dialog {
        width: min(560px, calc(100% - 1rem));
        border-radius: 14px;
    }

    .pic-modal__header,
    .pic-modal__body,
    .pic-modal__footer {
        padding-left: 0.95rem;
        padding-right: 0.95rem;
    }

    .pic-modal__footer {
        justify-content: stretch;
    }

    .pic-modal__btn {
        flex: 1;
    }
}