/**
 * ฟอร์มเข้าสู่ระบบ — ใช้ใน main ของ layout ประชุมวิชาการ
 */
.conference-login-main {
    --login-bg-top: #ccc27e;
    --login-bg-bottom: #fff4c6;
    background: linear-gradient(to bottom, var(--login-bg-top) 0%, var(--login-bg-bottom) 100%);
}

.conference-login-main .login-wrap {
    --navy: #001f3f;
    --placeholder: #6b7c93;
    --line: #ffffff;
    --input-fill: var(--login-bg-bottom);

    width: 100%;
    max-width: 380px;
    margin: 0 auto;
    font-family: 'Prompt', 'Kanit', system-ui, -apple-system, sans-serif;
    color: var(--navy);
}

.conference-login-main .login-frame {
    width: 100%;
}

.conference-login-main .login-line {
    height: 2px;
    background: var(--line);
    width: 100%;
    opacity: 0.95;
    box-shadow: 0 0 1px rgba(255, 255, 255, 0.5);
}

.conference-login-main .login-line--top {
    margin-bottom: 1.75rem;
}

.conference-login-main .login-line--bottom {
    margin-top: 1.75rem;
}

.conference-login-main .login-title {
    margin: 0 0 2rem;
    text-align: center;
    font-size: 1.85rem;
    font-weight: 300;
    letter-spacing: 0.02em;
    color: var(--navy);
}

.conference-login-main .login-alert {
    margin-bottom: 1.25rem;
    padding: 0.65rem 0.85rem;
    font-size: 0.8125rem;
    line-height: 1.45;
    border: 1px solid rgba(0, 31, 63, 0.2);
    background: rgba(255, 255, 255, 0.88);
    color: var(--navy);
}

.conference-login-main .login-alert--ok {
    border-color: rgba(25, 135, 84, 0.35);
    background: rgba(255, 255, 255, 0.92);
}

.conference-login-main .login-alert--err {
    border-color: rgba(220, 53, 69, 0.4);
    background: rgba(255, 255, 255, 0.92);
}

.conference-login-main .login-field {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    margin-bottom: 1.35rem;
    border-bottom: 2px solid var(--navy);
    padding-bottom: 0.35rem;
    background: transparent;
}

.conference-login-main .login-field i {
    font-size: 1.15rem;
    color: var(--navy);
    flex-shrink: 0;
}

.conference-login-main .login-field input {
    flex: 1;
    min-width: 0;
    border: none;
    outline: none;
    background: transparent;
    background-color: transparent;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--navy);
    padding: 0.35rem 0;
}

.conference-login-main .login-field input:focus {
    background-color: transparent;
}

.conference-login-main .login-field input::placeholder {
    color: var(--placeholder);
}

.conference-login-main .login-field input:-webkit-autofill,
.conference-login-main .login-field input:-webkit-autofill:hover,
.conference-login-main .login-field input:-webkit-autofill:focus,
.conference-login-main .login-field input:-webkit-autofill:active {
    -webkit-text-fill-color: var(--navy) !important;
    caret-color: var(--navy);
    box-shadow: 0 0 0 1000px var(--input-fill) inset !important;
    -webkit-box-shadow: 0 0 0 1000px var(--input-fill) inset !important;
    transition: background-color 99999s ease-out 0s;
}

.conference-login-main .login-field input:autofill {
    box-shadow: 0 0 0 1000px var(--input-fill) inset !important;
}

.conference-login-main .login-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.75rem;
    font-size: 0.8125rem;
}

.conference-login-main .login-remember {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    cursor: pointer;
    user-select: none;
    color: var(--navy);
    font-weight: 400;
}

.conference-login-main .login-remember input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 1rem;
    height: 1rem;
    margin: 0;
    border: 2px solid var(--navy);
    background: var(--navy);
    cursor: pointer;
    flex-shrink: 0;
}

.conference-login-main .login-remember input[type="checkbox"]:checked {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='white'%3E%3Cpath d='M12.207 4.793a1 1 0 010 1.414l-5 5a1 1 0 01-1.414 0l-2-2a1 1 0 011.414-1.414L6.5 9.086l4.293-4.293a1 1 0 011.414 0z'/%3E%3C/svg%3E");
    background-size: 0.7rem;
    background-position: center;
    background-repeat: no-repeat;
}

.conference-login-main .login-remember input[type="checkbox"]:focus-visible {
    outline: 2px solid var(--navy);
    outline-offset: 2px;
}

.conference-login-main .login-forgot {
    font-style: italic;
    color: var(--navy);
    text-decoration: none;
    font-weight: 400;
}

.conference-login-main .login-forgot:hover {
    text-decoration: underline;
}

.conference-login-main .login-submit {
    width: 100%;
    border: none;
    border-radius: 0;
    background-color: var(--navy);
    color: #ffffff;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 0.85rem 1rem;
    cursor: pointer;
}

.conference-login-main .login-submit:hover {
    filter: brightness(1.08);
}

.conference-login-main .login-submit:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 3px;
}

.conference-login-main .login-footer {
    margin-top: 2rem;
    text-align: center;
    font-size: 0.8125rem;
}

.conference-login-main .login-footer a {
    color: var(--navy);
    text-decoration: none;
    opacity: 0.85;
}

.conference-login-main .login-footer a:hover {
    text-decoration: underline;
    opacity: 1;
}

/* Forgot-password popup */
.fp-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(0, 15, 30, 0.55);
    backdrop-filter: blur(4px);
    padding: 1rem;
    animation: fpFadeIn 0.25s ease;
}

.fp-overlay.is-open {
    display: flex;
}

@keyframes fpFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fp-box {
    width: 100%;
    max-width: 400px;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.25);
    overflow: hidden;
    font-family: 'Prompt', 'Kanit', sans-serif;
    animation: fpSlideUp 0.3s ease;
}

@keyframes fpSlideUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

.fp-box__head {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 1.1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.fp-box__head-title {
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.45rem;
}

.fp-box__close {
    background: none;
    border: none;
    color: #fff;
    font-size: 1.3rem;
    cursor: pointer;
    opacity: 0.8;
    line-height: 1;
}

.fp-box__close:hover {
    opacity: 1;
}

.fp-box__body {
    padding: 1.5rem;
}

.fp-box__desc {
    font-size: 0.82rem;
    color: #475569;
    margin: 0 0 1.1rem;
    line-height: 1.55;
}

.fp-field {
    margin-bottom: 1rem;
}

.fp-field label {
    display: block;
    font-size: 0.78rem;
    font-weight: 500;
    color: #334155;
    margin-bottom: 0.3rem;
}

.fp-field input {
    width: 100%;
    border: 1.5px solid #cbd5e1;
    border-radius: 8px;
    padding: 0.55rem 0.75rem;
    font-family: inherit;
    font-size: 0.88rem;
    color: #1e293b;
    outline: none;
    transition: border-color 0.2s;
}

.fp-field input:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

.fp-field input.fp-field--err {
    border-color: #ef4444;
}

.fp-err-msg {
    font-size: 0.75rem;
    color: #ef4444;
    margin-top: 0.25rem;
    min-height: 1rem;
}

.fp-step {
    display: none;
}

.fp-step.is-active {
    display: block;
}

.fp-btn {
    width: 100%;
    border: none;
    border-radius: 8px;
    padding: 0.7rem;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: filter 0.15s;
}

.fp-btn--primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.fp-btn--primary:hover {
    filter: brightness(1.08);
}

.fp-btn--primary:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.fp-confirm-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(0, 15, 30, 0.5);
    backdrop-filter: blur(3px);
    padding: 1rem;
}

.fp-confirm-overlay.is-open {
    display: flex;
}

.fp-popup {
    width: 100%;
    max-width: 340px;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    text-align: center;
    overflow: hidden;
    font-family: 'Prompt', 'Kanit', sans-serif;
    animation: fpSlideUp 0.3s ease;
}

.fp-popup__step {
    display: none;
    padding: 2rem 1.5rem;
}

.fp-popup__step.is-active {
    display: block;
}

.fp-popup__icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.7rem;
    margin-bottom: 0.8rem;
}

.fp-popup__icon--ask {
    background: #eef2ff;
    color: #667eea;
}

.fp-popup__icon--ok {
    background: #dcfce7;
    color: #16a34a;
}

.fp-popup__icon--err {
    background: #fef2f2;
    color: #dc2626;
}

.fp-popup__title {
    font-size: 1.05rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.4rem;
}

.fp-popup__msg {
    font-size: 0.82rem;
    color: #64748b;
    line-height: 1.5;
    margin-bottom: 1.2rem;
}

.fp-popup__btns {
    display: flex;
    gap: 0.6rem;
    justify-content: center;
}

.fp-popup__btn {
    border: none;
    border-radius: 8px;
    padding: 0.55rem 1.4rem;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: filter 0.15s;
}

.fp-popup__btn--cancel {
    background: #f1f5f9;
    color: #475569;
}

.fp-popup__btn--cancel:hover {
    background: #e2e8f0;
}

.fp-popup__btn--ok {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.fp-popup__btn--ok:hover {
    filter: brightness(1.08);
}

.fp-spinner {
    display: inline-block;
    width: 42px;
    height: 42px;
    border: 4px solid #e2e8f0;
    border-top-color: #667eea;
    border-radius: 50%;
    animation: fpSpin 0.7s linear infinite;
    margin-bottom: 0.8rem;
}

@keyframes fpSpin {
    to { transform: rotate(360deg); }
}