/* ---- Shared form system (inputs, radios, selects, validation, details) ---- */

.field {
    position: relative;
}

.field input,
.field select,
.field textarea,
.portal-control {
    width: 100%;
    border: 1.5px solid #d5dee7;
    border-radius: 8px;
    padding: 0.45rem 0.7rem;
    min-height: 2.15rem;
    font: inherit;
    font-size: 0.92rem;
    line-height: 1.3;
    color: var(--portal-text);
    background: #fff;
    box-shadow: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.field input::placeholder,
.field textarea::placeholder {
    color: #94a3b8;
}

.field input:hover,
.field select:hover,
.field textarea:hover {
    border-color: #b7c5d3;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
    outline: none;
    border-color: var(--portal-secondary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--portal-secondary) 22%, transparent);
    background: #fff;
}

.field select,
select.portal-control {
    appearance: none;
    -webkit-appearance: none;
    padding-right: 2rem;
    min-height: 2.15rem;
    background-image:
        linear-gradient(45deg, transparent 50%, var(--portal-secondary) 50%),
        linear-gradient(135deg, var(--portal-secondary) 50%, transparent 50%),
        linear-gradient(to right, transparent, transparent);
    background-position:
        calc(100% - 1rem) calc(50% - 0.12rem),
        calc(100% - 0.65rem) calc(50% - 0.12rem),
        100% 0;
    background-size: 5px 5px, 5px 5px, 2rem 100%;
    background-repeat: no-repeat;
    cursor: pointer;
}

.field textarea {
    min-height: 96px;
    resize: vertical;
    line-height: 1.45;
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

.field label .req,
.req {
    color: #dc2626;
    font-weight: 700;
}

/* Field-level validation text hidden — invalid state uses red border only */
.validation-message,
.validation-summary-errors {
    display: none !important;
}

/* Invalid / valid field states (Blazor InputBase) */
.field input.invalid,
.field select.invalid,
.field textarea.invalid,
.field .invalid {
    border-color: #f87171 !important;
    background: #fff8f8 !important;
    box-shadow: 0 0 0 2px rgba(248, 113, 113, 0.16) !important;
}

/* Alerts with icons */
.alert {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    padding: 0.9rem 1rem;
    border-radius: 12px;
    margin-bottom: 1rem;
    font-weight: 600;
    line-height: 1.4;
}

.alert::before {
    font-family: "bootstrap-icons";
    font-size: 1.15rem;
    line-height: 1;
    flex-shrink: 0;
    margin-top: 0.05rem;
}

.alert-error {
    background: linear-gradient(135deg, #fef2f2, #fff5f5);
    color: #991b1b;
    border: 1px solid #fecaca;
    box-shadow: 0 8px 18px rgba(185, 28, 28, 0.08);
}

.alert-error::before {
    content: "\F33A";
    color: #ef4444;
}

.alert-success {
    background: linear-gradient(135deg, #ecfdf5, #f0fdf4);
    color: #166534;
    border: 1px solid #bbf7d0;
    box-shadow: 0 8px 18px rgba(22, 101, 52, 0.08);
}

.alert-success::before {
    content: "\F26A"; /* bi-check-circle */
    color: var(--portal-secondary);
}

/* Custom radios / checkboxes */
input[type="radio"],
input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 1.15rem;
    height: 1.15rem;
    margin: 0;
    flex-shrink: 0;
    border: 2px solid #b6c3d0;
    background: #fff;
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
    vertical-align: middle;
}

input[type="radio"] {
    border-radius: 50%;
}

input[type="checkbox"] {
    border-radius: 5px;
}

input[type="radio"]:hover,
input[type="checkbox"]:hover {
    border-color: var(--portal-secondary);
}

input[type="radio"]:checked {
    border-color: var(--portal-secondary);
    background:
        radial-gradient(circle at center, var(--portal-secondary) 0 38%, transparent 40%),
        #fff;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--portal-secondary) 18%, transparent);
}

input[type="checkbox"]:checked {
    border-color: var(--portal-secondary);
    background-color: var(--portal-secondary);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' d='M3.5 8.5 6.5 11.5 12.5 4.5'/%3E%3C/svg%3E");
    background-size: 0.75rem;
    background-position: center;
    background-repeat: no-repeat;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--portal-secondary) 18%, transparent);
}

input[type="radio"]:focus-visible,
input[type="checkbox"]:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--portal-secondary) 28%, transparent);
}

/* Option / package cards */
.option-card {
    border: 1.5px solid #dce4ec;
    border-radius: 12px;
    background: #fff;
    transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.option-card:hover {
    border-color: color-mix(in srgb, var(--portal-secondary) 40%, #dce4ec);
    box-shadow: 0 8px 18px rgba(15, 35, 55, 0.06);
}

.option-card.selected {
    border-color: var(--portal-secondary);
    box-shadow:
        inset 0 0 0 1px var(--portal-secondary),
        0 10px 22px color-mix(in srgb, var(--portal-secondary) 16%, transparent);
    background: color-mix(in srgb, var(--portal-secondary) 5%, #fff);
}

/* Details expand / collapse control */
.details-toggle,
.reg-type-details-toggle {
    appearance: none;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    border: 1px solid color-mix(in srgb, var(--portal-secondary) 28%, #d7e3db);
    background: color-mix(in srgb, var(--portal-secondary) 8%, #fff);
    color: var(--portal-secondary);
    border-radius: 999px;
    padding: 0.35rem 0.75rem 0.35rem 0.55rem;
    margin: 0;
    font: inherit;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.details-toggle:hover,
.reg-type-details-toggle:hover {
    background: color-mix(in srgb, var(--portal-secondary) 14%, #fff);
    border-color: var(--portal-secondary);
}

.details-toggle-chevron,
.reg-type-details-toggle::before {
    content: "";
    width: 0.95rem;
    height: 0.95rem;
    background-color: currentColor;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='black' d='M1.5 5.5 8 12l6.5-6.5-1.4-1.4L8 9.2 2.9 4.1z'/%3E%3C/svg%3E") center / contain no-repeat;
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='black' d='M1.5 5.5 8 12l6.5-6.5-1.4-1.4L8 9.2 2.9 4.1z'/%3E%3C/svg%3E") center / contain no-repeat;
    transition: transform 0.18s ease;
}

.details-toggle.is-open .details-toggle-chevron,
.reg-type-details-toggle.is-open::before {
    transform: rotate(180deg);
}

.reg-type-details-toggle {
    align-self: flex-start;
}

.details-panel {
    margin-top: 0.15rem;
    padding: 0.7rem 0.8rem;
    border-radius: 10px;
    background: #f5f8fa;
    border: 1px solid #e2e8f0;
    color: var(--portal-muted);
    font-size: 0.86rem;
    line-height: 1.5;
    animation: details-in 0.18s ease;
}

@keyframes details-in {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Type / package select button polish */
.reg-type-btn {
    border-radius: 999px !important;
    border: 1px solid #d5dee7;
    background: #f3f6f9 !important;
}

.reg-type-btn.is-selected {
    border-color: var(--portal-secondary);
    background: var(--portal-secondary) !important;
}

.reg-type-card {
    min-height: 100%;
}

.reg-type-card:focus-visible {
    outline: 2px solid color-mix(in srgb, var(--portal-secondary) 50%, transparent);
    outline-offset: 2px;
    border-radius: 8px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    border-radius: 999px;
    transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
    box-shadow: 0 6px 14px rgba(15, 35, 55, 0.1);
}

.btn:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 10px 20px rgba(15, 35, 55, 0.14);
}

.btn-secondary {
    box-shadow: 0 6px 14px color-mix(in srgb, var(--portal-secondary) 30%, transparent);
}

/* Align page-specific form skins with shared controls */
.reg-form .field input,
.reg-form .field select,
.reg-form .field textarea,
.contact-form-card .field input,
.contact-form-card .field select,
.contact-form-card .field textarea,
.abstract-form-card .field input,
.abstract-form-card .field select,
.abstract-form-card .field textarea,
.sponsors-registration .field input,
.sponsors-registration .field select,
.sponsors-registration .field textarea {
    background: #fff;
    border-color: #d5dee7;
    border-radius: 10px;
}

.sponsors-registration .field label {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--portal-secondary);
}

.sponsors-registration .grid-2 {
    gap: 1rem;
}