/* ============================================================
   RESERVATIONS — Floating button + Modal + Form
   Instituto Tecnológico CEPRO
   Depends on: tokens.css + global.css
   ============================================================ */

/* ============================================================
   FLOATING ACTION BUTTON (FAB)
   ============================================================ */
.reservation-fab {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: var(--z-modal, 3000);

    display: inline-flex;
    align-items: center;
    gap: var(--space-3);

    padding: 0.85rem 1.4rem 0.85rem 1.15rem;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;

    background-color: var(--color-success);
    color: var(--color-white);
    font-family: inherit;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    letter-spacing: var(--letter-spacing-wide);
    text-transform: uppercase;
    text-decoration: none;

    box-shadow:
        0 10px 30px rgba(0, 189, 9, 0.45),
        0 4px 12px rgba(0, 0, 0, 0.18);

    transition:
        transform var(--transition-base),
        background-color var(--transition-base),
        box-shadow var(--transition-base),
        opacity var(--transition-base);
}

.reservation-fab:hover {
    background-color: var(--color-success-light);
    transform: translateY(-3px) scale(1.02);
    box-shadow:
        0 14px 36px rgba(0, 189, 9, 0.55),
        0 6px 16px rgba(0, 0, 0, 0.22);
}

.reservation-fab:active {
    transform: translateY(-1px) scale(0.99);
}

body.reservation-modal-open .reservation-fab {
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
}

.reservation-fab__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    position: relative;
    z-index: 2;
}

.reservation-fab__icon svg {
    width: 100%;
    height: 100%;
    fill: var(--color-white);
}

.reservation-fab__label {
    position: relative;
    z-index: 2;
    white-space: nowrap;
}

.reservation-fab__pulse {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background-color: var(--color-success);
    opacity: 0.55;
    z-index: 1;
    pointer-events: none;
    animation: reservationPulse 2.4s ease-out infinite;
}

.reservation-fab__pulse--delay {
    animation-delay: 1.2s;
}

@keyframes reservationPulse {
    0% {
        transform: scale(1);
        opacity: 0.55;
    }
    70% {
        transform: scale(1.35);
        opacity: 0;
    }
    100% {
        transform: scale(1.35);
        opacity: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .reservation-fab__pulse {
        animation: none;
        opacity: 0;
    }
}

/* ============================================================
   MODAL — Backdrop + Panel
   ============================================================ */
.reservation-modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal, 3000);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    visibility: hidden;
    opacity: 0;
    transition:
        opacity var(--transition-base),
        visibility 0s linear var(--transition-base);
}

.reservation-modal.is-open {
    visibility: visible;
    opacity: 1;
    transition:
        opacity var(--transition-base),
        visibility 0s linear 0s;
}

.reservation-modal__backdrop {
    position: absolute;
    inset: 0;
    background-color: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    cursor: pointer;
    z-index: 1;
}

/* ============================================
   MODAL PANEL
   Fixed max height so the WHOLE form scrolls
   as one unit (header stays pinned at top,
   footer scrolls into view at the end).
   ============================================ */
.reservation-modal__panel {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 720px;
    max-height: calc(100vh - 2rem);
    background-color: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);

    display: flex;
    flex-direction: column;
    overflow: hidden;

    transform: translateY(20px) scale(0.98);
    opacity: 0;
    transition:
        transform var(--transition-slow) cubic-bezier(0.16, 1, 0.3, 1),
        opacity var(--transition-slow);
}

.reservation-modal.is-open .reservation-modal__panel {
    transform: translateY(0) scale(1);
    opacity: 1;
}

/* ============================================
   MODAL HEADER — pinned at top
   ============================================ */
.reservation-modal__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-6) var(--space-8) var(--space-5);
    border-bottom: 1px solid var(--color-gray-100);
    flex-shrink: 0;
    background-color: var(--color-white);
    z-index: 2;
}

.reservation-modal__title {
    font-size: clamp(1.25rem, 2.4vw, 1.65rem);
    font-weight: var(--font-weight-extrabold);
    color: var(--color-primary);
    margin: 0 0 var(--space-1);
    line-height: 1.2;
}

.reservation-modal__subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin: 0;
    line-height: var(--line-height-normal);
}

.reservation-modal__close {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border: none;
    border-radius: var(--radius-full);
    background-color: var(--color-gray-100);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.reservation-modal__close:hover {
    background-color: var(--color-gray-200);
    transform: rotate(90deg);
}

.reservation-modal__close svg {
    width: 20px;
    height: 20px;
    fill: var(--color-gray-700);
}

/* ============================================
   FORM — the WHOLE form scrolls as one unit
   (header stays pinned above; footer scrolls into view at the end)
   ============================================ */
.reservation-form {
    display: flex;
    flex-direction: column;
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;

    scrollbar-width: thin;
    scrollbar-color: var(--color-gray-300) transparent;
}

.reservation-form::-webkit-scrollbar {
    width: 8px;
}

.reservation-form::-webkit-scrollbar-track {
    background: transparent;
}

.reservation-form::-webkit-scrollbar-thumb {
    background-color: var(--color-gray-300);
    border-radius: var(--radius-full);
}

.reservation-form::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-gray-400);
}

/* Grid is now just a static grid (no own scroll) */
.reservation-form__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5) var(--space-5);
    padding: var(--space-6) var(--space-8);
    flex: 0 0 auto;
}

.reservation-form__field {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    min-width: 0;
}

.reservation-form__field--full {
    grid-column: 1 / -1;
}

/* ============================================
   FORM — Labels + Inputs
   ============================================ */
.reservation-form__label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-800);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

.reservation-form__required {
    color: var(--color-danger);
    font-weight: var(--font-weight-bold);
}

.reservation-form__optional {
    color: var(--color-gray-500);
    font-weight: var(--font-weight-regular);
    font-size: var(--font-size-xs);
}

.reservation-form__input,
.reservation-form__select,
.reservation-form__textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: inherit;
    font-size: var(--font-size-base);
    color: var(--color-gray-900);
    background-color: var(--color-white);
    border: 1.5px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition:
        border-color var(--transition-fast),
        box-shadow var(--transition-fast),
        background-color var(--transition-fast);
    box-sizing: border-box;
}

.reservation-form__input::placeholder,
.reservation-form__textarea::placeholder {
    color: var(--color-gray-400);
}

.reservation-form__input:hover,
.reservation-form__select:hover,
.reservation-form__textarea:hover {
    border-color: var(--color-gray-300);
}

.reservation-form__input:focus,
.reservation-form__select:focus,
.reservation-form__textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-a10);
}

.reservation-form__select {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%236b7280'><path d='M12 15.5a1 1 0 0 1-.71-.29l-4-4a1 1 0 0 1 1.42-1.42L12 13.09l3.29-3.3a1 1 0 1 1 1.42 1.42l-4 4a1 1 0 0 1-.71.29Z'/></svg>");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 20px;
    padding-right: 2.5rem;
    cursor: pointer;
}

.reservation-form__textarea {
    resize: vertical;
    min-height: 80px;
    line-height: var(--line-height-normal);
}

.reservation-form__phone-wrap {
    display: flex;
    align-items: stretch;
    border: 1.5px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
    background-color: var(--color-white);
    transition:
        border-color var(--transition-fast),
        box-shadow var(--transition-fast);
}

.reservation-form__phone-wrap:hover {
    border-color: var(--color-gray-300);
}

.reservation-form__phone-wrap:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-a10);
}

.reservation-form__phone-prefix {
    display: inline-flex;
    align-items: center;
    padding: 0 var(--space-3);
    background-color: var(--color-gray-100);
    color: var(--color-gray-700);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    border-right: 1.5px solid var(--color-gray-200);
    flex-shrink: 0;
}

.reservation-form__input--phone {
    border: none;
    border-radius: 0;
    flex: 1 1 auto;
}

.reservation-form__input--phone:focus {
    box-shadow: none;
    border: none;
}

.reservation-form__hint {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

.reservation-form__error {
    font-size: var(--font-size-xs);
    color: var(--color-danger);
    min-height: 1em;
    display: block;
}

.reservation-form__input.has-error,
.reservation-form__select.has-error,
.reservation-form__textarea.has-error,
.reservation-form__phone-wrap.has-error {
    border-color: var(--color-danger);
    box-shadow: 0 0 0 3px rgba(202, 7, 7, 0.12);
}

/* ---- Radios (Días) ---- */
.reservation-form__radios {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
}

.reservation-form__radio {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 0.65rem 1rem;
    border: 1.5px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    background-color: var(--color-white);
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    transition:
        border-color var(--transition-fast),
        background-color var(--transition-fast);
    user-select: none;
    position: relative;
}

.reservation-form__radio:hover {
    border-color: var(--color-gray-300);
    background-color: var(--color-gray-50);
}

.reservation-form__radio input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.reservation-form__radio-box {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 2px solid var(--color-gray-300);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: border-color var(--transition-fast);
    flex-shrink: 0;
    position: relative;
}

.reservation-form__radio-box::after {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-primary);
    transform: scale(0);
    transition: transform var(--transition-fast);
}

.reservation-form__radio input[type="radio"]:checked + .reservation-form__radio-box {
    border-color: var(--color-primary);
}

.reservation-form__radio input[type="radio"]:checked + .reservation-form__radio-box::after {
    transform: scale(1);
}

.reservation-form__radio:has(input[type="radio"]:checked) {
    border-color: var(--color-primary);
    background-color: var(--color-primary-a10);
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}

/* ============================================
   FORM FOOTER — scrolls into view at the END
   No longer pinned: user must scroll to reach
   the submit button, encouraging completion.
   ============================================ */
.reservation-form__footer {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    padding: var(--space-5) var(--space-8) var(--space-6);
    border-top: 1px solid var(--color-gray-100);
    background-color: var(--color-gray-50);
    flex: 0 0 auto;
}

.reservation-form__disclaimer {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin: 0;
    text-align: center;
    line-height: var(--line-height-normal);
}

.reservation-form__submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);

    width: 100%;
    padding: 1rem 1.5rem;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;

    background-color: var(--color-success);
    color: var(--color-white);
    font-family: inherit;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    letter-spacing: var(--letter-spacing-wide);
    text-transform: uppercase;
    line-height: 1;

    outline: none;
    box-shadow: 0 8px 20px rgba(0, 189, 9, 0.35);
    transition:
        background-color var(--transition-base),
        transform var(--transition-fast),
        box-shadow var(--transition-base);
    box-sizing: border-box;
    min-height: 0;
    text-decoration: none;
}

.reservation-form__submit:hover {
    background-color: var(--color-success-light);
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(0, 189, 9, 0.45);
}

.reservation-form__submit:active {
    transform: translateY(0);
}

.reservation-form__submit:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 3px;
}

.reservation-form__submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.reservation-form__submit-icon {
    width: 20px;
    height: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    line-height: 0;
}

.reservation-form__submit-icon svg {
    width: 100%;
    height: 100%;
    fill: var(--color-white);
    display: block;
}

/* ============================================
   BODY SCROLL LOCK
   ============================================ */
body.reservation-modal-open {
    overflow: hidden;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 720px) {
    .reservation-modal {
        padding: 0;
        align-items: flex-end;
    }

    .reservation-modal__panel {
        max-width: 100%;
        max-height: 92vh;
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        transform: translateY(100%);
    }

    .reservation-modal.is-open .reservation-modal__panel {
        transform: translateY(0);
    }

    .reservation-modal__header {
        padding: var(--space-5) var(--space-5) var(--space-4);
    }

    .reservation-form__grid {
        grid-template-columns: 1fr;
        padding: var(--space-5);
        gap: var(--space-4);
    }

    .reservation-form__footer {
        padding: var(--space-4) var(--space-5) var(--space-5);
    }

    .reservation-form__submit {
        padding: 0.95rem 1.25rem;
        font-size: var(--font-size-sm);
    }
}

@media (max-width: 400px) {
    .reservation-modal__title {
        font-size: 1.15rem;
    }

    .reservation-form__radios {
        flex-direction: column;
        align-items: stretch;
    }

    .reservation-form__radio {
        justify-content: flex-start;
    }
}

/* ============================================
   REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    .reservation-modal,
    .reservation-modal__panel,
    .reservation-fab,
    .reservation-modal__close {
        transition: none;
    }
}