:root {
    --surface-color: #2d2d2d;
    --text-color: #ffffff;
    --primary-color: #4fc3f7;
    --primary-hover: #81d4fa;
    --danger-color: #dc3545;
    --success-color: #4CAF50;
    --background-color: #1a1a1a;
    --accent-color: #4CAF50;
    --secondary-color: #283593;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    color: var(--text-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.header {
    background-color: var(--surface-color);
    color: var(--text-color);
    padding: 20px 0;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.btn {
    color: var(--text-color);
    background-color: var(--accent-color);
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: var(--secondary-color);
}

.card {
    background: var(--surface-color);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.progress-bar {
    width: 100%;
    height: 20px;
    background-color: #2a2a2a;
    border-radius: 10px;
    overflow: hidden;
    margin: 20px 0;
}

.progress-bar-fill {
    height: 100%;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
}

.question-counter {
    position: fixed;
    top: 1rem;
    right: 1rem;
    background: var(--surface-color);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    z-index: 900;
}

.subject-result {
    margin: 10px 0;
    padding: 15px;
    background-color: var(--surface-color);
    border: 1px solid var(--accent-color);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.subject-result h3 {
    color: var(--text-color);
    margin: 0 0 10px 0;
}

.solutions {
    margin-top: 30px;
}

.solution-item {
    background-color: var(--surface-color);
    border: 1px solid var(--accent-color);
    padding: 15px;
    margin: 10px 0;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.solution-item.correct {
    border-left: 4px solid #4caf50;
}

.solution-item.incorrect {
    border-left: 4px solid #f44336;
}

.solution-question {
    font-weight: bold;
    color: var(--text-color);
}

.solution-options {
    margin: 10px 0;
    padding-left: 20px;
    color: var(--text-color);
}

.solution-correct {
    color: #4caf50;
    font-weight: bold;
}

.solution-your-answer {
    color: #f44336;
    font-weight: bold;
}

.score-summary {
    background-color: var(--surface-color);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.total-score {
    font-size: 24px;
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: 10px;
}

.completion-time {
    font-size: 18px;
    color: var(--text-color);
    margin-bottom: 10px;
}

.leaderboard {
    margin: 30px 0;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
    background-color: var(--surface-color);
    border-radius: 8px;
    overflow: hidden;
}

.admin-table th,
.admin-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--accent-color);
}

.admin-table th {
    background-color: var(--primary-color);
    color: var(--text-color);
    font-weight: bold;
}

.admin-table tr:hover {
    background-color: rgba(57, 73, 171, 0.1);
}

.current-user {
    background-color: rgba(57, 73, 171, 0.2);
}

.navbar {
    background-color: var(--surface-color);
    padding: 1rem 2rem;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 2000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    color: var(--text-color);
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--primary-color);
}

.user-info {
    color: var(--text-color);
    margin-right: 1rem;
}

.btn-logout {
    background-color: var(--danger-color);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 4px;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.btn-logout:hover {
    background-color: #c82333;
}

.timer {
    position: fixed;
    top: 1rem;
    left: 1rem;
    background: var(--surface-color);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    z-index: 900;
}

.login-card {
    max-width: 400px;
    margin: 2rem auto;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.feature {
    background-color: var(--surface-color);
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s;
}

.feature:hover {
    transform: translateY(-5px);
}

.feature h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature p {
    color: var(--text-color);
    opacity: 0.9;
}

.auth-container {
    max-width: 400px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.auth-card {
    background: var(--surface-color);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.auth-header h1 {
    margin: 0.5rem 0;
    color: var(--text-color);
}

.auth-header p {
    color: var(--text-color);
    opacity: 0.8;
}

.auth-form .form-group {
    margin-bottom: 1.5rem;
}

.input-icon {
    position: relative;
}

.input-icon i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-color);
    opacity: 0.5;
}

.input-icon input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-color);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.input-icon input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.1);
}

.input-icon input::placeholder {
    color: var(--text-color);
    opacity: 0.5;
}

.auth-form .btn {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--text-color);
    opacity: 0.8;
}

.auth-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
}

.auth-footer a:hover {
    text-decoration: underline;
}

.error {
    background: rgba(244, 67, 54, 0.1);
    color: #f44336;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.success {
    background: rgba(76, 175, 80, 0.1);
    color: #4CAF50;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-small {
    padding: 0.25rem 0.75rem;
    font-size: 0.875rem;
}

.main-content {
    padding-top: 80px;
    min-height: 100vh;
    background-color: #2d2d2d;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.hero-section {
    text-align: center;
    padding: 4rem 2rem;
    background-color: #1a1a1a;
    border-radius: 12px;
    margin-bottom: 3rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.hero-title {
    font-size: 2.5rem;
    color: #ffffff;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: #cccccc;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary:hover {
    background: #81d4fa;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.features-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 2rem 0;
}

.feature-card {
    background-color: #1a1a1a;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-title {
    font-size: 1.5rem;
    color: #ffffff;
    margin-bottom: 1rem;
}

.feature-description {
    color: #cccccc;
    line-height: 1.6;
}

/* Reset Test Button */
.btn-reset-test {
    background: linear-gradient(45deg, #2196F3, #4fc3f7);
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    margin: 0 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.btn-reset-test:hover {
    background: linear-gradient(45deg, #1976D2, #29B6F6);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

@media (max-width: 768px) {
    .navbar {
        padding: 1rem;
    }
    
    .navbar-nav {
        gap: 1rem;
    }
    
    .hero-section {
        padding: 2rem 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .features-section {
        grid-template-columns: 1fr;
    }
}

.phone-group {
    display: flex;
    gap: 10px;
    width: 100%;
}

.phone-prefix {
    flex: 0 0 140px;
}

.phone-number {
    flex: 1;
}

.phone-prefix,
.phone-number {
    position: relative;
}

.phone-prefix select,
.phone-number input {
    width: 100%;
    height: 100%;
    background: transparent;
    border: none;
    outline: none;
    color: #fff;
    font-size: 16px;
    padding: 14px 14px 14px 42px;
    box-sizing: border-box;
}

.phone-prefix select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    cursor: pointer;
}

.phone-prefix .fas,
.phone-number .fas {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: #aaa;
    z-index: 2;
}

.phone-prefix select option {
    color: #000;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #fff;
    font-size: 15px;
}

.navbar-container {
    position: relative;
}

.navbar-logo-center {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.navbar-logo {
    height: 65px;
    width: auto;
    object-fit: contain;
}

@media (max-width: 900px) {
    .navbar-logo {
        height: 40px;
    }
}

/* ===== BGT PREMIUM NAVBAR - ISOLATED ===== */
.bgt-navbar{
    position: sticky;
    top: 0;
    z-index: 9999;
    width: 100%;
    background: linear-gradient(135deg, rgba(21,25,34,0.97), rgba(28,34,48,0.95));
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    box-shadow: 0 8px 24px rgba(0,0,0,0.18);
}

.bgt-navbar__container{
    width: 100%;
    max-width: 1400px;
    min-height: 86px;
    margin: 0 auto;
    padding: 0 28px;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    gap: 22px !important;
    box-sizing: border-box;
    position: relative;
}

.bgt-navbar__left{
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
}

.bgt-navbar__center{
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    text-align: center;
    z-index: 1;
    pointer-events: none;
}

.bgt-navbar__right{
    display: flex !important;
    align-items: center !important;
    justify-content: flex-end !important;
    gap: 12px !important;
    flex-wrap: wrap;
    min-width: 0;
}

.bgt-navbar__brand{
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    text-align: center !important;
    text-decoration: none !important;
    line-height: 1.1;
}

.bgt-navbar__brand-main{
    color: #ffffff;
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.3px;
}

.bgt-navbar__brand-sub{
    color: rgba(255,255,255,0.72);
    font-size: 0.82rem;
    font-weight: 500;
    margin-top: 4px;
    letter-spacing: 0.4px;
    text-transform: uppercase;
}

.bgt-navbar__logo-link{
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 10px 18px !important;
    border-radius: 18px;
    text-decoration: none !important;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    box-shadow: 0 8px 24px rgba(0,0,0,0.18);
    transition: all 0.22s ease;
}

.bgt-navbar__logo-link:hover{
    transform: translateY(-1px);
    background: rgba(255,255,255,0.07);
}

.bgt-navbar__logo{
    display: block !important;
    height: 46px !important;
    width: auto !important;
    max-width: 220px !important;
    object-fit: contain !important;
}

.bgt-navbar__link,
.bgt-navbar__signup,
.bgt-navbar__logout{
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 8px !important;
    text-decoration: none !important;
    white-space: nowrap;
    font-weight: 700;
    font-size: 0.95rem;
    padding: 11px 16px;
    border-radius: 12px;
    transition: all 0.22s ease;
}

.bgt-navbar__link{
    color: #f3f6fb !important;
    background: transparent;
}

.bgt-navbar__link:hover{
    background: rgba(255,255,255,0.07);
    color: #7cc8ff !important;
}

.bgt-navbar__user{
    display: inline-flex !important;
    align-items: center !important;
    gap: 9px !important;
    padding: 11px 14px;
    border-radius: 14px;
    background: rgba(255,255,255,0.06);
    color: #ffffff !important;
    font-size: 0.95rem;
    font-weight: 600;
    white-space: nowrap;
    border: 1px solid rgba(255,255,255,0.07);
}

.bgt-navbar__user i{
    color: #7cc8ff;
}

.bgt-navbar__logout{
    background: linear-gradient(135deg, #e53946, #d62839);
    color: #fff !important;
    box-shadow: 0 10px 22px rgba(214,40,57,0.22);
}

.bgt-navbar__logout:hover{
    transform: translateY(-1px);
}

.bgt-navbar__signup{
    background: linear-gradient(135deg, #1b8ef2, #0f6fd3);
    color: #fff !important;
    box-shadow: 0 10px 22px rgba(15,111,211,0.22);
}

.bgt-navbar__signup:hover{
    transform: translateY(-1px);
}

/* hard reset against page-specific css */
.bgt-navbar img{
    max-width: none !important;
}

.bgt-navbar a{
    width: auto !important;
}

@media (max-width: 1180px){
    .bgt-navbar__container{
        min-height: auto;
        padding: 12px 16px;
        gap: 10px !important;
        flex-direction: column !important;
        justify-content: center !important;
    }

    .bgt-navbar__center{
        position: static;
        left: auto;
        top: auto;
        transform: none;
        pointer-events: auto;
        order: 2;
        width: 100%;
    }

    .bgt-navbar__left,
    .bgt-navbar__right{
        width: 100%;
        justify-content: center !important;
    }

    .bgt-navbar__left{
        order: 1;
    }

    .bgt-navbar__right{
        order: 3;
        flex-wrap: wrap;
    }

    .bgt-navbar__brand{
        align-items: center;
        text-align: center;
    }

    .bgt-navbar__logo{
        height: 50px !important;
    }
}

@media (max-width: 768px){
    .bgt-navbar__container{
        min-height: auto;
        padding: 10px 10px;
        gap: 8px !important;
    }

    .bgt-navbar__brand-main{
        font-size: 1.15rem;
        line-height: 1.1;
    }

    .bgt-navbar__brand-sub{
        font-size: 0.62rem;
        line-height: 1.15;
    }

    .bgt-navbar__logo-link{
        padding: 7px 12px !important;
        border-radius: 14px;
    }

    .bgt-navbar__logo{
        height: 34px !important;
        max-width: 160px !important;
    }

    .bgt-navbar__right{
        gap: 8px !important;
        width: 100%;
        max-width: 100%;
    }

    .bgt-navbar__link,
    .bgt-navbar__user,
    .bgt-navbar__logout,
    .bgt-navbar__signup{
        font-size: 0.82rem;
        padding: 8px 10px;
        max-width: 100%;
    }

    .bgt-navbar__user span{
        display: inline-block;
        max-width: 190px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .bgt-navbar__user{
        display: none !important;
    }
}

@media (max-width: 430px){
    .bgt-navbar__brand-main{
        font-size: 1rem;
    }

    .bgt-navbar__brand-sub{
        display: none;
    }

}

.bgt-navbar__left{
    display:flex;
    align-items:center;
    gap:18px;
}

/* ===== CLEAN AUTH EXPERIENCE ===== */
.auth-page {
    --auth-blue: #105f88;
    --auth-blue-dark: #0b4f72;
    --auth-ink: #0c5b83;
    --auth-muted: #6f84a3;
    --auth-line: #dce5ef;
    --auth-soft: #f6f9fc;
    min-height: 100vh;
    background:
        radial-gradient(circle at 50% 0%, rgba(16, 95, 136, 0.08), transparent 28rem),
        linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
    color: var(--auth-blue-dark);
}

.auth-page .container {
    max-width: none;
    padding: 0;
}

.auth-shell {
    width: 100%;
    min-height: 100vh;
    padding: 22px 18px 18px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.auth-brand-panel {
    text-align: center;
    margin: 12px 0 22px;
}

.auth-brand-icon {
    width: 82px;
    height: 82px;
    margin: 0 auto 14px;
    border-radius: 0;
    display: grid;
    place-items: center;
    background: transparent;
    color: #ffffff;
    font-size: 32px;
    box-shadow: none;
}

.auth-brand-icon img {
    width: 82px;
    height: 82px;
    object-fit: contain;
    display: block;
}

.auth-brand-panel h1 {
    margin: 0;
    color: var(--auth-blue);
    font-size: clamp(1.38rem, 2.5vw, 1.78rem);
    line-height: 1.18;
    font-weight: 850;
    letter-spacing: -0.04em;
}

.auth-brand-panel p {
    margin-top: 4px;
    color: #9aa9bf;
    font-size: 0.92rem;
}

.auth-page .auth-container {
    width: 100%;
    max-width: 460px;
    margin: 0 auto;
    padding: 0;
}

.auth-page .auth-container--signup {
    max-width: 720px;
}

.auth-page .auth-card {
    background: #ffffff;
    color: var(--auth-blue-dark);
    border: 1px solid var(--auth-line);
    border-radius: 18px;
    padding: 24px 24px 22px;
    box-shadow: 0 14px 30px rgba(31, 54, 86, 0.07);
}

.auth-card-title {
    margin-bottom: 18px;
}

.auth-card-title h2 {
    margin: 0;
    color: var(--auth-blue);
    font-size: 1.22rem;
    line-height: 1.25;
    font-weight: 850;
}

.auth-card-title p {
    margin: 5px 0 0;
    color: var(--auth-muted);
    font-size: 0.9rem;
    line-height: 1.4;
}

.auth-form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 13px 16px;
}

.auth-span-2 {
    grid-column: span 2;
}

.auth-page .auth-form .form-group {
    margin-bottom: 0;
}

.auth-page .auth-container--login .auth-form .form-group + .form-group {
    margin-top: 16px;
}

.auth-page .form-group label {
    display: block;
    margin-bottom: 7px;
    color: var(--auth-blue-dark);
    font-size: 0.92rem;
    font-weight: 800;
}

.auth-page .input-icon {
    position: relative;
}

.auth-page .input-icon > i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #8da0b8;
    opacity: 1;
    z-index: 2;
    pointer-events: none;
}

.auth-page .input-icon input,
.auth-page .input-icon select {
    width: 100%;
    min-height: 46px;
    padding: 11px 42px 11px 44px;
    border: 1px solid var(--auth-line);
    border-radius: 12px;
    background: #fbfcfe;
    color: var(--auth-blue-dark);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.auth-page .input-icon input::placeholder {
    color: #8fa0b8;
    opacity: 1;
}

.auth-page .input-icon input:focus,
.auth-page .input-icon select:focus {
    background: #ffffff;
    border-color: rgba(16, 95, 136, 0.55);
    box-shadow: 0 0 0 4px rgba(16, 95, 136, 0.11);
}

.auth-page .select-icon::after {
    content: "\f078";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #91a1b6;
    pointer-events: none;
    font-size: 12px;
}

.auth-page .input-icon select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    cursor: pointer;
}

.auth-page .input-icon select option {
    color: var(--auth-blue-dark);
    background: #ffffff;
}

.auth-page .phone-group {
    display: grid;
    grid-template-columns: 124px minmax(0, 1fr);
    gap: 8px;
    width: 100%;
}

.auth-page .phone-prefix,
.auth-page .phone-number {
    min-width: 0;
}

.auth-password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border: 0;
    border-radius: 10px;
    background: transparent;
    color: #8fa0b8;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
}

.auth-password-toggle:hover,
.auth-password-toggle.is-visible {
    background: rgba(16, 95, 136, 0.08);
    color: var(--auth-blue);
}

.auth-password-toggle i {
    position: static;
    transform: none;
    opacity: 1;
}

.auth-page .auth-submit {
    width: 100%;
    min-height: 52px;
    margin-top: 20px;
    border-radius: 13px;
    background: var(--auth-blue);
    color: #ffffff;
    font-size: 1rem;
    font-weight: 850;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 12px 22px rgba(16, 95, 136, 0.16);
}

.auth-page .auth-submit:hover {
    background: var(--auth-blue-dark);
    transform: translateY(-1px);
}

.auth-page .auth-footer {
    margin-top: 16px;
    text-align: center;
    color: #7f8fa8;
    opacity: 1;
}

.auth-page .auth-footer a {
    color: var(--auth-blue);
    font-weight: 850;
    text-decoration: none;
}

.auth-page .auth-footer a:hover {
    text-decoration: underline;
}

.auth-system-footer {
    margin-top: 16px;
    color: #b8c5d6;
    font-size: 0.95rem;
}

.auth-page .warning-box {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    background: #fff8e6;
    border: 1px solid #f2d78f;
    color: #725200;
    padding: 11px 13px;
    border-radius: 14px;
    margin-bottom: 16px;
    font-size: 0.88rem;
    line-height: 1.42;
    box-shadow: none;
}

.auth-page .warning-box i,
.auth-page .warning-box strong {
    color: #9b6b00;
}

.auth-page .error,
.auth-page .success {
    border-radius: 14px;
    margin-bottom: 16px;
    padding: 11px 13px;
    font-weight: 700;
}

.auth-page .error {
    background: #fff0f0;
    color: #b42318;
    border: 1px solid #ffd0d0;
}

.auth-page .success {
    background: #effbf4;
    color: #157347;
    border: 1px solid #bce8cc;
}

@media (max-width: 760px) {
    .auth-shell {
        padding: 18px 12px 16px;
    }

    .auth-brand-panel {
        margin: 10px 0 18px;
    }

    .auth-brand-icon {
        width: 70px;
        height: 70px;
        font-size: 28px;
        margin-bottom: 12px;
    }

    .auth-brand-icon img {
        width: 70px;
        height: 70px;
    }

    .auth-brand-panel h1 {
        font-size: 1.28rem;
    }

    .auth-brand-panel p {
        font-size: 0.86rem;
    }

    .auth-page .auth-card {
        padding: 20px 16px 18px;
        border-radius: 16px;
    }

    .auth-form-grid {
        grid-template-columns: 1fr;
        gap: 13px;
    }

    .auth-span-2 {
        grid-column: span 1;
    }

    .auth-page .phone-group {
        grid-template-columns: 112px minmax(0, 1fr);
    }
}

@media (max-width: 420px) {
    .auth-page .phone-group {
        grid-template-columns: 1fr;
    }
}