/* =========================================================================
   Register — premium multi-step experience (2026 theme)
   ========================================================================= */

.register-2026 {
    --reg-brand: #667eea;
    --reg-teal: #ff7c17;
    --reg-amber: #f59e0b;
    --reg-bg: #f7f9f3;
    --reg-card: #ffffff;
    --reg-muted: #5c6478;
    --reg-border: color-mix(in srgb, #000 10%, transparent);
    --reg-radius: 18px;
    --reg-shadow: 0 24px 60px -28px rgba(79, 70, 229, 0.32);
    --reg-hero-gradient: var(--site-gradient-banner);
    --reg-powered-gradient: var(--site-gradient-card);
    --reg-shadow: 0 24px 60px -28px rgba(38, 11, 51, 0.35);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    position: relative;
    color: #0f172a;
    background-image: url('../image/dummy-img-1920x900.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

.register-2026::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-color: transparent;
    background-image: var(--site-gradient-banner);
}

.register-2026 .bg-animation,
.register-2026 .floating-elements {
    display: none !important;
}

.register-2026 main,
.register-2026 footer {
    position: relative;
    z-index: 1;
}

/* ----- Page shell ----- */
.register-2026 main {
    width: 100%;
    max-width: 100%;
}

.reg-page {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: clamp(4.75rem, 10vh, 5.5rem) clamp(1rem, 2vw, 1.75rem) clamp(2rem, 4vw, 3rem);
}

.reg-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: clamp(1.25rem, 3vw, 2.5rem);
    align-items: start;
}

/* ----- Left panel — hero gradient merges into page via wave ----- */
.reg-aside {
    position: sticky;
    top: 1.25rem;
    display: flex;
    flex-direction: column;
    border-radius: var(--reg-radius);
    overflow: hidden;
    background: var(--reg-powered-gradient);
    box-shadow: var(--reg-shadow);
}

.reg-aside__inner {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    padding: clamp(0.85rem, 1.75vw, 1.35rem) clamp(1rem, 2vw, 1.5rem) 2.5rem;
    background:
    background: linear-gradient(135deg, rgba(12, 18, 34, 0.55) 0%, rgba(38, 11, 51, 0.35) 42%, transparent 68%),
        var(--reg-powered-gradient);
}

.reg-aside__wave {
    position: relative;
    z-index: 2;
    margin-top: -1px;
    line-height: 0;
    pointer-events: none;
}

.reg-aside__wave svg {
    display: block;
    width: 100%;
    height: 56px;
}

.reg-aside__wave path {
    fill: rgba(79, 70, 229, 0.35);
}

.reg-brand {
    display: block;
}

.reg-brand__intro {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.65rem;
}

/* Mini hero title — badge above title row, tight "AI Olympiad" */
.register-2026 .reg-brand__title.monoton-regular {
    font-size: clamp(1.35rem, 2.2vw, 1.85rem) !important;
    font-weight: 400;
    letter-spacing: 0.06em;
    line-height: 1.05;
    color: #fff;
    margin: 0 0 0.5rem;
    text-align: left;
    width: 100%;
    overflow: visible;
}

.register-2026 .reg-brand__title.hero-title-stack {
    padding-top: 0;
}

.register-2026 .reg-brand .hero-title-row {
    display: inline-flex;
    flex-wrap: nowrap;
    align-items: flex-end;
    justify-content: flex-start;
    gap: 0;
    line-height: 1.05;
}

.register-2026 .reg-brand .hero-title-aio {
    display: inline-flex;
    align-items: baseline;
    gap: 0;
    font-size: 1.28em;
    letter-spacing: 0.02em;
    line-height: 1;
}

.register-2026 .reg-brand .hero-title-prefix,
.register-2026 .reg-brand .hero-title-o {
    margin-right: 0;
    font-size: 1em;
    line-height: 1;
}

.register-2026 .reg-brand .hero-title-olympiad {
    display: inline-block;
    font-size: 0.936em;
    letter-spacing: 0.04em;
    line-height: 1;
}

.register-2026 .reg-brand .hero-title-asia {
    display: inline-block;
    margin-left: 0.04em;
    letter-spacing: 0.02em;
}

.register-2026 .reg-brand__badge.hero-grade-badge {
    display: inline-flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: center;
    gap: 0.42rem;
    line-height: 1;
    width: max-content;
    max-width: 100%;
    padding: 0.34rem 0.72rem;
    border-radius: 999px;
    background: rgba(245, 158, 11, 0.18);
    border: 1px solid rgba(245, 158, 11, 0.35);
    backdrop-filter: blur(6px);
    margin: 0;
}

.register-2026 .reg-brand__badge.hero-grade-badge i {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--reg-amber);
    font-size: 0.66rem;
    line-height: 1;
    flex-shrink: 0;
}

.register-2026 .reg-brand__badge.hero-grade-badge span {
    color: #fde68a;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    line-height: 1.2;
    white-space: nowrap;
}

.reg-brand__tagline {
    margin: 0;
    font-size: 0.88rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.82);
    line-height: 1.55;
    max-width: 32ch;
}

.register-2026 .hero-brand-i {
    position: relative;
    display: inline-block;
    font-size: 1em;
    line-height: 1;
    vertical-align: baseline;
}

.register-2026 .hero-brand-i-dot {
    position: absolute;
    left: 50%;
    top: -0.14em;
    transform: translate(-50%, -100%);
    width: 0.24em;
    height: 0.24em;
    min-width: 5px;
    min-height: 5px;
    border-radius: 50%;
    background-color: #ef4444;
    box-shadow: 0 0 8px rgba(239, 68, 68, 0.9);
    animation: reg-brand-i-blink 2s ease-in-out infinite;
}

@keyframes reg-brand-i-blink {
    0%, 100% { opacity: 1; transform: translate(-50%, -100%) scale(1); }
    50% { opacity: 0.35; transform: translate(-50%, -100%) scale(0.82); }
}

.reg-highlights {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.reg-highlights li {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    padding: 0.65rem 0.75rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.14);
    backdrop-filter: blur(4px);
}

.reg-highlights li i {
    color: #fde68a;
    margin-top: 0.15rem;
    font-size: 0.9rem;
}

.reg-highlights li span {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.88);
    line-height: 1.35;
}

.reg-highlights li strong {
    font-size: 0.88rem;
    font-weight: 700;
    color: #fff;
}

.reg-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.reg-stat {
    text-align: center;
    padding: 0.65rem 0.4rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.14);
}

.reg-stat__num {
    display: block;
    font-size: 1.1rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
}

.reg-stat__label {
    font-size: 0.68rem;
    color: rgba(255, 255, 255, 0.72);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* ----- Form card ----- */
.reg-card {
    background: var(--reg-card);
    border: 1px solid var(--reg-border);
    border-radius: 22px;
    box-shadow: var(--reg-shadow);
    overflow: hidden;
}

.reg-card__header {
    padding: 1.35rem 1.5rem 1.1rem;
    background: var(--section-gradient);
    color: #fff;
    text-align: center;
}

.reg-card__header h2 {
    margin: 0 0 0.35rem;
    font-size: clamp(1.15rem, 2vw, 1.4rem);
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
}

.reg-card__header p {
    margin: 0;
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.88);
    line-height: 1.45;
}

.reg-card__body {
    padding: 1.25rem 1.35rem 1.5rem;
}

/* Tabs */
.reg-tabs {
    display: flex;
    gap: 0.35rem;
    padding: 0.3rem;
    margin-bottom: 1.15rem;
    background: #eef0f7;
    border-radius: 14px;
}

.reg-tabs .tab-button {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.6rem 0.5rem;
    border: none;
    border-radius: 11px;
    background: transparent;
    color: var(--reg-muted);
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}

.reg-tabs .tab-button.active {
    background: var(--site-gradient-accent-135);
    color: #fff;
    box-shadow: 0 8px 20px -10px rgba(79, 70, 229, 0.55);
}

.reg-tabs .tab-button i {
    font-size: 0.85rem;
}

/* Wizard progress */
.reg-progress {
    display: none;
    margin-bottom: 1.15rem;
}

.reg-progress.is-visible {
    display: block;
}

.reg-progress__track {
    height: 4px;
    background: #e8eaf3;
    border-radius: 999px;
    overflow: hidden;
    margin-bottom: 0.65rem;
}

.reg-progress__fill {
    height: 100%;
    width: 25%;
    background: var(--site-gradient-accent);
    border-radius: 999px;
    transition: width 0.35s ease;
}

.reg-progress__labels {
    display: flex;
    justify-content: space-between;
    gap: 0.35rem;
}

.reg-progress__label {
    flex: 1;
    text-align: center;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: #94a3b8;
    line-height: 1.2;
}

.reg-progress__label.is-active,
.reg-progress__label.is-done {
    color: var(--reg-brand);
}

/* Steps */
.reg-step {
    display: none;
    animation: regStepIn 0.35s ease;
}

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

@keyframes regStepIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reg-step__title {
    margin: 0 0 0.25rem;
    font-size: 1.05rem;
    font-weight: 800;
    color: #0f172a;
}

.reg-step__sub {
    margin: 0 0 1rem;
    font-size: 0.84rem;
    color: var(--reg-muted);
    line-height: 1.5;
}

/* Form fields */
.register-2026 .form-group {
    margin-bottom: 0.95rem;
}

.register-2026 .form-group label {
    display: block;
    margin-bottom: 0.35rem;
    font-size: 0.8rem;
    font-weight: 700;
    color: #0f172a;
}

.register-2026 .input-wrapper {
    position: relative;
}

.register-2026 .form-control,
.register-2026 .country-code,
.register-2026 .phone-number {
    width: 100%;
    padding: 0.7rem 0.85rem 0.7rem 2.35rem;
    border: 1.5px solid var(--reg-border) !important;
    border-radius: 12px !important;
    background: #fff !important;
    color: #0f172a !important;
    font-size: 0.88rem !important;
    line-height: 1.35;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.register-2026 select.form-control {
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    padding-right: 2.25rem !important;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2364748b' d='M1.4.6 6 5.2 10.6.6 12 2 6 8 0 2z'/%3E%3C/svg%3E") !important;
    background-repeat: no-repeat !important;
    background-position: right 0.9rem center !important;
    background-size: 12px 8px !important;
}

.register-2026 .phone-number,
.register-2026 .country-code {
    padding-left: 0.75rem !important;
}

.register-2026 .country-code {
    width: 5.5rem;
    flex-shrink: 0;
    font-size: 0.75rem !important;
}

.register-2026 .form-control:focus,
.register-2026 .country-code:focus,
.register-2026 .phone-number:focus {
    outline: none !important;
    border-color: var(--reg-brand) !important;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12) !important;
}

.register-2026 .form-control.error,
.register-2026 .phone-number.error {
    border-color: #ef4444 !important;
}

.register-2026 .input-icon {
    position: absolute;
    left: 0.8rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--reg-brand) !important;
    font-size: 0.85rem;
    pointer-events: none;
}

.register-2026 .phone-input {
    display: flex;
    gap: 0.45rem;
}

.register-2026 .phone-input.is-hidden {
    display: none !important;
}

.register-2026 .grade-hint {
    margin: 0 0 0.55rem;
    font-size: 0.78rem;
    color: var(--reg-muted);
}

.register-2026 .grade-chip-group {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0.45rem;
}

.register-2026 .grade-chip {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 0.25rem;
    border-radius: 12px;
    border: 1.5px solid var(--reg-border);
    background: #fff;
    cursor: pointer;
    transition: all 0.2s ease;
    user-select: none;
}

.register-2026 .grade-chip:hover {
    border-color: rgba(79, 70, 229, 0.35);
    background: rgba(79, 70, 229, 0.04);
}

.register-2026 .grade-chip.is-selected {
    border-color: var(--reg-brand);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.10), rgba(255, 124, 23, 0.08));
    box-shadow: 0 8px 20px -12px rgba(79, 70, 229, 0.45);
}

.register-2026 .grade-chip__num {
    font-size: 1.05rem;
    font-weight: 800;
    color: #0f172a;
    line-height: 1;
}

.register-2026 .grade-chip.is-selected .grade-chip__num {
    color: var(--reg-brand);
}

.register-2026 .grade-chip__label {
    font-size: 0.58rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--reg-muted);
    margin-top: 0.15rem;
}

/* Plan cards */
.register-2026 .radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.register-2026 .radio-option {
    display: flex;
    align-items: flex-start;
    gap: 0.55rem;
    padding: 0.9rem 1rem;
    border: 1.5px solid var(--reg-border);
    border-radius: 16px;
    background: #fff;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.register-2026 .radio-option:hover {
    border-color: rgba(79, 70, 229, 0.3);
}

.register-2026 .radio-option.selected,
.register-2026 .radio-option:has(input:checked) {
    border-color: var(--reg-brand);
    box-shadow: 0 12px 28px -16px rgba(79, 70, 229, 0.35);
    transform: translateY(-1px);
}

.register-2026 .radio-option input[type="radio"] {
    margin-top: 0.2rem;
    accent-color: var(--reg-brand);
    flex-shrink: 0;
}

.register-2026 .radio-content h4 {
    margin: 0 0 0.25rem;
    font-size: 0.88rem;
    font-weight: 800;
    color: #0f172a;
    line-height: 1.3;
}

.register-2026 .radio-content p {
    margin: 0;
    font-size: 0.76rem;
    color: var(--reg-muted);
    line-height: 1.45;
}

.register-2026 .register-option-price {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.35rem 0.5rem;
    margin: 0.35rem 0 0.2rem;
    font-size: 0.78rem;
}

.register-2026 .register-price-strike {
    text-decoration: line-through;
    color: var(--reg-muted);
    font-weight: 600;
}

.register-2026 .register-price-highlight {
    font-weight: 800;
    color: var(--reg-brand);
}

.register-2026 .register-price-dot {
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: var(--reg-brand);
    opacity: 0.6;
}

/* Payment summary (step 3) */
.register-2026 .reg-pay-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin: 0.25rem 0 1rem;
    padding: 0.85rem 1rem;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.08), rgba(255, 124, 23, 0.10));
    border: 1px solid rgba(79, 70, 229, 0.16);
}

.register-2026 .reg-pay-summary.hidden {
    display: none;
}

.register-2026 .reg-pay-summary__label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--reg-muted);
}

.register-2026 .reg-pay-summary__amount {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--reg-brand);
    letter-spacing: -0.02em;
}

/* Coupon */
.register-2026 .reg-coupon-row {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.register-2026 .reg-coupon-row .form-control {
    flex: 1;
    min-width: 140px;
    padding-left: 0.85rem !important;
    text-transform: uppercase;
}

.register-2026 #applyCouponBtn {
    padding: 0.65rem 1rem;
    border-radius: 12px;
    border: 1.5px solid var(--reg-brand);
    background: transparent;
    color: var(--reg-brand);
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}

.register-2026 #applyCouponBtn:hover {
    background: rgba(79, 70, 229, 0.08);
}

/* Verification */
.register-2026 .phone-verification-section {
    margin-top: 0.65rem;
}

.register-2026 .phone-verify-trigger {
    width: 100%;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 0.35rem;
    white-space: normal;
    line-height: 1.35;
    text-align: center;
}

.register-2026 .phone-verify-trigger span {
    line-height: 1.35;
}

.register-2026 .phone-input.is-verified .country-code,
.register-2026 .phone-input.is-verified .phone-number {
    background: #f1f5f9;
    color: #0f172a;
    cursor: not-allowed;
}

.register-2026 .phone-email-widget-host {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.register-2026 .pe_signin_button {
    display: flex;
    justify-content: stretch;
    width: 100%;
}

.register-2026 #btn_ph_login {
    width: 100% !important;
    max-width: 100% !important;
    white-space: normal !important;
    line-height: 1.35 !important;
    font-size: 0.8rem !important;
    padding: 0.7rem 1rem !important;
    text-align: center;
}

.register-2026 #btn_ph_login_text {
    line-height: 1.35;
}

.register-2026 .verification-status {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: 0.5rem;
    padding: 0.5rem 0.7rem;
    border-radius: 10px;
    font-size: 0.76rem;
    line-height: 1.35;
}

.register-2026 .verification-status.pending {
    background: rgba(245, 158, 11, 0.12);
    border: 1px solid rgba(245, 158, 11, 0.25);
    color: #b45309;
}

.register-2026 .verification-status.verified {
    background: rgba(20, 184, 166, 0.1);
    border: 1px solid rgba(20, 184, 166, 0.28);
    color: #0f766e;
}

.register-2026 .verification-status.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.25);
    color: #b91c1c;
}

.register-2026 .reg-change-phone {
    display: inline-flex;
    margin-top: 0.45rem;
    padding: 0;
    border: none;
    background: none;
    color: var(--reg-brand);
    font-size: 0.76rem;
    font-weight: 700;
    text-decoration: underline;
    cursor: pointer;
}

.register-2026 .reg-change-phone:hover {
    color: #4338ca;
}

.register-2026 .phone-locked {
    position: relative;
}

/* Checkbox + messages */
.register-2026 .checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.55rem;
    margin: 0.5rem 0 0;
}

.register-2026 .checkbox-group--principal {
    margin: 0 0 0.85rem;
    padding: 0.65rem 0.75rem;
    border: 1px solid var(--reg-border);
    border-radius: 12px;
    background: rgba(79, 70, 229, 0.04);
}

.register-2026 .checkbox-group--principal label {
    color: #334155;
}

.register-2026 .checkbox-group input {
    margin-top: 0.15rem;
    accent-color: var(--reg-brand);
}

.register-2026 .checkbox-group label {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--reg-muted);
    line-height: 1.5;
    margin: 0;
}

.register-2026 .checkbox-group a {
    color: var(--reg-brand);
    font-weight: 700;
    text-decoration: none;
}

.register-2026 .checkbox-group a:hover {
    text-decoration: underline;
}

.register-2026 .error-message {
    margin-top: 0.35rem;
    font-size: 0.72rem;
    color: #dc2626;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.register-2026 .success-message {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 0.85rem;
    margin-bottom: 1rem;
    border-radius: 12px;
    background: rgba(20, 184, 166, 0.1);
    border: 1px solid rgba(20, 184, 166, 0.28);
    color: #0f766e;
    font-size: 0.82rem;
}

.register-2026 .hidden {
    display: none !important;
}

/* Wizard actions */
.reg-actions {
    display: flex;
    gap: 0.6rem;
    margin-top: 1.25rem;
    padding-top: 1rem;
    border-top: 1px solid var(--reg-border);
}

.reg-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.8rem 1.1rem;
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.reg-btn--ghost {
    flex: 0 0 auto;
    min-width: 5.5rem;
    background: #eef0f7;
    color: #475569;
}

.reg-btn--ghost:hover {
    background: #e2e6f0;
}

.reg-btn--primary {
    background: var(--site-gradient-accent-135);
    color: #fff;
    box-shadow: 0 12px 28px -10px rgba(79, 70, 229, 0.55);
}

.reg-btn--primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 32px -10px rgba(79, 70, 229, 0.6);
}

.register-2026 #submitBtn,
.register-2026 .submit-button {
    width: 100%;
    padding: 0.85rem 1.25rem !important;
    font-size: 0.95rem !important;
    font-weight: 700 !important;
    border: none !important;
    border-radius: 999px !important;
    background: var(--site-gradient-accent-135) !important;
    color: #fff !important;
    box-shadow: 0 12px 28px -10px rgba(79, 70, 229, 0.55);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.register-2026 #submitBtn:hover:not(:disabled) {
    transform: translateY(-1px);
}

.register-2026 #submitBtn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.register-2026 .spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: #fff;
    border-radius: 50%;
    animation: regSpin 0.8s linear infinite;
    display: inline-block;
    margin-right: 0.35rem;
    vertical-align: middle;
}

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

/* School form — single scroll */
.register-2026 #school-fields .reg-step__title {
    margin-top: 0;
}

/* Responsive */
@media (max-width: 991px) {
    .reg-layout {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .reg-page {
        padding-top: calc(5.35rem + env(safe-area-inset-top, 0px));
        padding-left: 0.75rem;
        padding-right: 0.75rem;
        padding-bottom: 2.5rem;
    }

    .register-2026 {
        background-attachment: scroll;
    }

    .register-2026 > header {
        position: fixed;
    }

    .reg-aside {
        display: none;
    }

    .reg-card {
        order: -1;
        border-radius: 16px;
    }

    .reg-card__header {
        padding: 1.1rem 1rem 0.95rem;
    }

    .reg-card__header h2 {
        font-size: clamp(1.05rem, 4.5vw, 1.25rem);
    }

    .reg-card__body {
        padding: 1rem 1rem 0.25rem;
    }

    .register-2026 .reg-brand__title.monoton-regular {
        font-size: clamp(1.1rem, 4.8vw, 1.4rem) !important;
        margin-bottom: 0.45rem;
    }

    .register-2026 .reg-brand .hero-title-row {
        flex-wrap: wrap;
        max-width: 100%;
    }

    .register-2026 .reg-brand__badge.hero-grade-badge {
        margin-bottom: 0.1rem;
    }

    .reg-stats {
        grid-template-columns: repeat(3, 1fr);
    }

    .register-2026 .phone-verify-trigger {
        font-size: 0.78rem;
        padding: 0.75rem 0.65rem;
    }

    .reg-actions {
        position: sticky;
        bottom: 0;
        z-index: 5;
        margin: 1rem -1rem 0;
        padding: 0.85rem 1rem calc(0.85rem + env(safe-area-inset-bottom, 0px));
        background: var(--reg-card);
        border-top: 1px solid var(--reg-border);
        box-shadow: 0 -10px 28px -16px rgba(15, 23, 42, 0.18);
    }

    .register-2026 footer {
        margin-top: 0.5rem;
    }
}

@media (max-width: 640px) {
    .reg-page {
        padding-top: calc(5.65rem + env(safe-area-inset-top, 0px));
    }

    .register-2026 .grade-chip-group {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .reg-progress__label {
        font-size: 0.58rem;
    }

    .reg-tabs .tab-button {
        font-size: 0.72rem;
        padding: 0.55rem 0.35rem;
    }

    .reg-actions {
        flex-direction: column-reverse;
    }

    .reg-btn--ghost {
        width: 100%;
        min-width: 0;
    }

    .reg-btn--primary,
    .register-2026 .submit-button {
        width: 100%;
    }
}

@media (max-width: 400px) {
    .register-2026 .grade-chip-group {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (prefers-reduced-motion: reduce) {
    .reg-step {
        animation: none;
    }

    .register-2026 .hero-brand-i-dot {
        animation: none;
    }
}

/* Duplicate detection — modals & email notice */
.register-2026.reg-modal-open {
    overflow: hidden;
}

.register-2026 .reg-modal {
    position: fixed;
    inset: 0;
    z-index: 1200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.register-2026 .reg-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(3px);
}

.register-2026 .reg-modal__panel {
    position: relative;
    z-index: 1;
    width: min(100%, 420px);
    background: var(--reg-card);
    border-radius: var(--reg-radius);
    box-shadow: var(--reg-shadow);
    padding: 1.35rem 1.5rem 1.25rem;
    animation: regModalIn 0.22s ease-out;
}

.register-2026 .reg-modal__panel--details {
    width: min(100%, 460px);
}

.register-2026 .reg-modal__title {
    margin: 0 0 0.5rem;
    font-size: 1.1rem;
    font-weight: 700;
    color: #0f172a;
}

.register-2026 .reg-modal__text,
.register-2026 .reg-modal__sub {
    margin: 0 0 1rem;
    font-size: 0.86rem;
    line-height: 1.55;
    color: var(--reg-muted);
}

.register-2026 .reg-modal__actions {
    display: flex;
    gap: 0.6rem;
    justify-content: flex-end;
}

.register-2026 .reg-modal__actions--single {
    justify-content: stretch;
}

.register-2026 .reg-modal__actions--single .reg-btn {
    width: 100%;
}

.register-2026 .reg-details-list {
    margin: 0 0 1.1rem;
    padding: 0;
}

.register-2026 .reg-details-list__row {
    display: grid;
    grid-template-columns: 5.5rem 1fr;
    gap: 0.5rem;
    padding: 0.55rem 0;
    border-bottom: 1px solid var(--reg-border);
}

.register-2026 .reg-details-list__row:last-child {
    border-bottom: none;
}

.register-2026 .reg-details-list dt {
    margin: 0;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: #64748b;
}

.register-2026 .reg-details-list dd {
    margin: 0;
    font-size: 0.88rem;
    font-weight: 600;
    color: #0f172a;
    word-break: break-word;
}

.register-2026 .duplicate-email-notice {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem 0.5rem;
    margin-top: 0.45rem;
    padding: 0.55rem 0.7rem;
    border-radius: 10px;
    background: rgba(79, 70, 229, 0.08);
    border: 1px solid rgba(79, 70, 229, 0.2);
    color: #4338ca;
    font-size: 0.76rem;
    line-height: 1.4;
}

.register-2026 .duplicate-email-notice i {
    flex-shrink: 0;
}

.register-2026 .duplicate-email-link {
    background: none;
    border: none;
    padding: 0;
    font: inherit;
    font-weight: 700;
    color: var(--reg-brand);
    text-decoration: underline;
    cursor: pointer;
}

.register-2026 .duplicate-email-link:hover {
    color: #4338ca;
}

@keyframes regModalIn {
    from {
        opacity: 0;
        transform: translateY(8px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@media (max-width: 640px) {
    .register-2026 .reg-modal {
        align-items: center;
        justify-content: center;
        padding: max(1rem, env(safe-area-inset-top, 0px)) 0.85rem max(1rem, env(safe-area-inset-bottom, 0px));
    }

    .register-2026 .reg-modal__panel,
    .register-2026 .reg-modal__panel--details {
        width: min(100%, 24rem);
        max-width: calc(100vw - 1.7rem);
        max-height: min(85vh, 100dvh - 2rem - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px));
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        overscroll-behavior: contain;
        border-radius: var(--reg-radius);
        padding: 1.25rem 1.15rem 1.15rem;
        margin: 0 auto;
    }

    .register-2026 .reg-modal__actions {
        flex-direction: column-reverse;
        align-items: stretch;
        gap: 0.55rem;
    }

    .register-2026 .reg-modal__actions .reg-btn {
        width: 100%;
        min-height: 2.85rem;
        flex: none;
    }

    .register-2026 .reg-modal__actions--single {
        flex-direction: column;
    }

    .register-2026 .reg-details-list__row {
        grid-template-columns: 1fr;
        gap: 0.2rem;
        padding: 0.65rem 0;
    }

    .register-2026 .reg-details-list dt {
        font-size: 0.68rem;
    }

    .register-2026 .reg-details-list dd {
        font-size: 0.92rem;
    }
}

@media (max-width: 400px) {
    .register-2026 .reg-modal__title {
        font-size: 1rem;
    }

    .register-2026 .reg-modal__text,
    .register-2026 .reg-modal__sub {
        font-size: 0.82rem;
    }
}