:root {
    --green: #32d66b;
    --green-dark: #22a950;
    --blue: #4f8cff;
    --blue-dark: #346bd6;
    --purple: #8b5cf6;
    --cyan: #3ddbd9;
    --dark: #112033;
    --navy: #0d1b2c;
    --muted: #667085;
    --soft: #f4f8fb;
    --white: #ffffff;
    --border: #e4ebf3;
    --card-bg: rgba(255, 255, 255, 0.78);
    --glass-border: rgba(255, 255, 255, 0.74);
    --shadow: 0 28px 70px rgba(17, 32, 51, 0.14);
    --shadow-soft: 0 14px 34px rgba(17, 32, 51, 0.07);
}

body.dark-theme {
    --dark: #f5f8fc;
    --muted: #9aa6b7;
    --soft: #0c1827;
    --white: #112239;
    --border: rgba(255, 255, 255, 0.09);
    --card-bg: rgba(17, 32, 51, 0.76);
    --glass-border: rgba(255, 255, 255, 0.08);
    --shadow: 0 30px 80px rgba(0, 0, 0, 0.4);
    --shadow-soft: 0 14px 34px rgba(0, 0, 0, 0.24);
}

* { box-sizing: border-box; }

body {
    min-height: 100vh;
    margin: 0;
    font-family: "Inter", sans-serif;
    color: var(--dark);
    background:
        radial-gradient(circle at 8% 18%, rgba(50, 214, 107, 0.14), transparent 28%),
        radial-gradient(circle at 90% 8%, rgba(79, 140, 255, 0.16), transparent 31%),
        radial-gradient(circle at 75% 90%, rgba(139, 92, 246, 0.09), transparent 30%),
        linear-gradient(180deg, #fbfdff 0%, #eef7f2 100%);
    overflow-x: hidden;
}

body.dark-theme {
    background:
        radial-gradient(circle at 10% 15%, rgba(50, 214, 107, 0.08), transparent 28%),
        radial-gradient(circle at 90% 10%, rgba(79, 140, 255, 0.09), transparent 30%),
        linear-gradient(180deg, #09111e 0%, #050a12 100%);
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -2;
    pointer-events: none;
    opacity: 0.16;
    background-image:
        linear-gradient(rgba(79, 140, 255, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(50, 214, 107, 0.07) 1px, transparent 1px);
    background-size: 54px 54px;
    mask-image: linear-gradient(180deg, #000, transparent 88%);
}

a { color: inherit; }

.page {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    padding-bottom: 12px;
}

.navbar {
    width: min(1180px, calc(100% - 40px));
    margin: 22px auto 0;
    border: 1px solid var(--border);
    border-radius: 26px;
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: blur(22px);
    box-shadow: var(--shadow-soft);
    position: sticky;
    top: 14px;
    z-index: 20;
}

body.dark-theme .navbar { background: rgba(13, 27, 44, 0.76); }

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--dark);
    font-weight: 900;
    text-decoration: none;
}

.brand-logo { object-fit: contain; }
.nav-actions { display: flex; align-items: center; }

.nav-actions button {
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--card-bg);
    color: var(--dark);
    cursor: pointer;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 16px;
    border-radius: 14px;
    border: 1px solid transparent;
    font-size: 13px;
    font-weight: 900;
    text-decoration: none;
}

.btn-ghost { color: var(--dark); background: var(--soft); border-color: var(--border); }
.btn-primary { color: white; background: linear-gradient(135deg, var(--green-dark), var(--blue)); }

.login-orb-1,
.login-orb-2 {
    position: fixed;
    z-index: -1;
    border-radius: 50%;
    filter: blur(8px);
    pointer-events: none;
}

.login-orb-1 {
    top: -16vw;
    right: -12vw;
    width: 48vw;
    height: 48vw;
    background: radial-gradient(circle, rgba(61, 219, 217, 0.2), transparent 68%);
}

.login-orb-2 {
    bottom: -22vw;
    left: -15vw;
    width: 58vw;
    height: 58vw;
    background: radial-gradient(circle, rgba(50, 214, 107, 0.16), transparent 68%);
}

.login-wrapper {
    width: min(1180px, calc(100% - 40px));
    min-height: calc(100vh - 190px);
    margin: 38px auto 22px;
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(430px, 0.92fr);
    border: 1px solid var(--glass-border);
    border-radius: 38px;
    background: var(--card-bg);
    box-shadow: var(--shadow);
    backdrop-filter: blur(28px);
    overflow: hidden;
}

.login-showcase {
    min-height: 690px;
    position: relative;
    display: flex;
    align-items: flex-end;
    padding: clamp(38px, 5vw, 66px);
    color: white;
    overflow: hidden;
    background:
        radial-gradient(circle at 75% 10%, rgba(61, 219, 217, 0.24), transparent 30%),
        radial-gradient(circle at 10% 90%, rgba(50, 214, 107, 0.2), transparent 32%),
        linear-gradient(145deg, #10243a 0%, #0d1b2c 52%, #152d49 100%);
}

.login-showcase::before {
    content: "";
    position: absolute;
    inset: 0;
    opacity: 0.2;
    background-image:
        linear-gradient(rgba(255,255,255,0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.08) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: linear-gradient(180deg, #000, transparent 80%);
}

.showcase-content { position: relative; z-index: 2; max-width: 560px; }

.showcase-kicker,
.login-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    margin-bottom: 14px;
    color: #79e7a0;
    font-size: 11px;
    font-weight: 900;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.showcase-content h1 {
    max-width: 540px;
    margin: 0 0 18px;
    font-size: clamp(38px, 4.4vw, 62px);
    line-height: 0.98;
    letter-spacing: -0.065em;
}

.showcase-content > p {
    max-width: 530px;
    margin: 0;
    color: rgba(255,255,255,0.68);
    font-size: 15px;
    font-weight: 600;
    line-height: 1.75;
}

.showcase-features { margin-top: 32px; display: grid; gap: 12px; }

.showcase-feature {
    display: flex;
    align-items: center;
    gap: 13px;
    padding: 13px 15px;
    border: 1px solid rgba(255,255,255,0.09);
    border-radius: 18px;
    background: rgba(255,255,255,0.055);
    backdrop-filter: blur(12px);
}

.feature-icon {
    width: 38px;
    height: 38px;
    flex: 0 0 auto;
    display: grid;
    place-items: center;
    border-radius: 12px;
}

.feature-icon.green { color: #79e7a0; background: rgba(50,214,107,0.13); }
.feature-icon.blue { color: #8bb3ff; background: rgba(79,140,255,0.14); }
.feature-icon.purple { color: #bca0ff; background: rgba(139,92,246,0.14); }

.showcase-feature strong,
.showcase-feature small,
.showcase-proof strong,
.showcase-proof small { display: block; }

.showcase-feature strong { font-size: 13px; margin-bottom: 3px; }

.showcase-feature small,
.showcase-proof small {
    color: rgba(255,255,255,0.55);
    font-size: 11px;
    font-weight: 600;
}

.showcase-proof { margin-top: 26px; display: flex; align-items: center; gap: 13px; }
.showcase-proof strong { margin-bottom: 4px; font-size: 12px; }
.proof-avatars { display: flex; padding-left: 8px; }

.proof-avatars span {
    width: 34px;
    height: 34px;
    margin-left: -8px;
    display: grid;
    place-items: center;
    border: 2px solid #10243a;
    border-radius: 50%;
    color: white;
    background: linear-gradient(135deg, var(--blue), var(--purple));
    font-size: 9px;
    font-weight: 900;
}

.proof-avatars span:nth-child(2) { background: linear-gradient(135deg, var(--green-dark), var(--cyan)); }
.proof-avatars span:nth-child(3) { background: linear-gradient(135deg, #f59e0b, #ef4444); }
.proof-avatars span:nth-child(4) { background: #283e58; }

.showcase-orbit {
    position: absolute;
    top: 42px;
    right: 54px;
    width: 190px;
    height: 190px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 50%;
    animation: orbitFloat 6s ease-in-out infinite;
}

.showcase-orbit::before,
.showcase-orbit::after {
    content: "";
    position: absolute;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 50%;
}

.showcase-orbit::before { inset: 28px; }
.showcase-orbit::after { inset: 58px; }

.orbit-core {
    position: absolute;
    inset: 66px;
    z-index: 2;
    display: grid;
    place-items: center;
    border-radius: 18px;
    color: white;
    background: linear-gradient(135deg, var(--green), var(--blue));
    box-shadow: 0 0 35px rgba(61,219,217,0.28);
    transform: rotate(8deg);
}

.orbit-dot {
    position: absolute;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    box-shadow: 0 0 14px currentColor;
}

.dot-one { top: 14px; left: 53px; color: var(--green); background: currentColor; }
.dot-two { right: 10px; bottom: 55px; color: var(--blue); background: currentColor; }
.dot-three { left: 22px; bottom: 21px; color: var(--purple); background: currentColor; }

.login-card {
    min-width: 0;
    padding: clamp(32px, 4.3vw, 58px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: rgba(255,255,255,0.32);
}

body.dark-theme .login-card { background: rgba(7, 17, 29, 0.28); }

.login-card-top {
    margin-bottom: 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.login-mobile-brand {
    display: none;
    align-items: center;
    gap: 8px;
    color: var(--dark);
    font-size: 14px;
    font-weight: 900;
    text-decoration: none;
}

.login-mobile-brand img { width: 38px; height: 38px; object-fit: contain; }

.secure-session {
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 11px;
    border: 1px solid rgba(50,214,107,0.18);
    border-radius: 99px;
    color: var(--green-dark);
    background: rgba(50,214,107,0.08);
    font-size: 10px;
    font-weight: 900;
}

.login-header { margin-bottom: 24px; }
.login-eyebrow { color: var(--green-dark); margin-bottom: 8px; }

.login-header h2 {
    margin: 0 0 9px;
    color: var(--dark);
    font-size: clamp(28px, 3vw, 38px);
    line-height: 1.08;
    letter-spacing: -0.05em;
}

.login-header p {
    margin: 0;
    color: var(--muted);
    font-size: 13px;
    font-weight: 650;
    line-height: 1.55;
}

.login-tabs {
    margin-bottom: 24px;
    padding: 5px;
    display: flex;
    gap: 5px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: var(--soft);
}

.login-tab-btn {
    flex: 1;
    min-height: 43px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 0;
    border-radius: 11px;
    color: var(--muted);
    background: transparent;
    cursor: pointer;
    font-size: 12px;
    font-weight: 900;
    transition: 0.22s ease;
}

.login-tab-btn:hover { color: var(--dark); }

.login-tab-btn.active {
    color: white;
    background: linear-gradient(135deg, #18304c, var(--navy));
    box-shadow: 0 8px 18px rgba(13,27,44,0.16);
}

.form-slider-container,
.form-slider-wrapper,
.form-window { width: 100%; }

.form-window[hidden] { display: none !important; }
.form-group { margin-bottom: 17px; }

.form-group label {
    display: block;
    margin-bottom: 7px;
    color: var(--dark);
    font-size: 11px;
    font-weight: 850;
}

.input-wrapper { position: relative; display: flex; align-items: center; }

.input-icon {
    position: absolute;
    left: 15px;
    z-index: 2;
    color: #94a0b2;
    font-size: 13px;
    pointer-events: none;
    transition: color 0.2s;
}

.form-group input {
    width: 100%;
    min-height: 50px;
    padding: 11px 46px 11px 43px;
    border: 1px solid var(--border);
    border-radius: 14px;
    outline: 0;
    color: var(--dark);
    background: rgba(255,255,255,0.64);
    font-size: 13px;
    font-weight: 700;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

body.dark-theme .form-group input { background: rgba(255,255,255,0.035); }
.form-group input::placeholder { color: #9ca7b7; font-weight: 600; }

.form-group input:focus {
    border-color: var(--blue);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(79,140,255,0.13);
}

.input-wrapper:focus-within .input-icon { color: var(--blue); }
.form-group input.is-invalid { border-color: #ef4444; box-shadow: 0 0 0 4px rgba(239,68,68,0.1); }
.form-group input.is-valid { border-color: rgba(34,169,80,0.7); }

.pass-toggle-btn {
    position: absolute;
    right: 8px;
    z-index: 3;
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    border: 0;
    border-radius: 10px;
    color: var(--muted);
    background: transparent;
    cursor: pointer;
}

.pass-toggle-btn:hover { color: var(--dark); background: var(--soft); }

.field-error {
    min-height: 15px;
    display: block;
    margin: 5px 3px 0;
    color: #d92d20;
    font-size: 10px;
    font-weight: 750;
}

.form-options {
    margin: 2px 0 21px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    color: var(--muted);
    font-size: 11px;
    font-weight: 750;
}

.checkbox-label {
    display: inline-flex;
    align-items: flex-start;
    gap: 9px;
    cursor: pointer;
}

.checkbox-label input {
    width: 16px;
    height: 16px;
    flex: 0 0 auto;
    margin-top: 1px;
    accent-color: var(--blue);
}

.forgot-link,
.register-consent a {
    color: var(--blue-dark);
    font-weight: 850;
    text-decoration: none;
}

.forgot-link:hover,
.register-consent a:hover { text-decoration: underline; }

.register-consent {
    margin: 2px 0 0;
    color: var(--muted);
    font-size: 10px;
    font-weight: 650;
    line-height: 1.5;
}

.consent-error { margin-bottom: 10px; }

.password-strength {
    margin: 8px 2px 5px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 5px;
}

.password-strength span {
    height: 4px;
    border-radius: 99px;
    background: var(--border);
    transition: background 0.2s;
}

.password-strength[data-level="1"] span:nth-child(-n+1) { background: #ef4444; }
.password-strength[data-level="2"] span:nth-child(-n+2) { background: #f59e0b; }
.password-strength[data-level="3"] span:nth-child(-n+3) { background: var(--blue); }
.password-strength[data-level="4"] span:nth-child(-n+4) { background: var(--green-dark); }

.password-strength-text {
    display: block;
    color: var(--muted);
    font-size: 9px;
    font-weight: 650;
    line-height: 1.45;
}

.login-btn {
    width: 100%;
    min-height: 52px;
    padding: 12px 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border: 0;
    border-radius: 15px;
    color: white;
    background: linear-gradient(135deg, var(--green-dark), var(--blue));
    box-shadow: 0 12px 26px rgba(79,140,255,0.23);
    cursor: pointer;
    font-size: 13px;
    font-weight: 900;
    transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
}

.login-btn:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 15px 32px rgba(79,140,255,0.3); }
.login-btn:active:not(:disabled) { transform: translateY(0); }
.login-btn:disabled { opacity: 0.65; cursor: wait; }
.login-btn.is-loading i { animation: spin 0.8s linear infinite; }

.social-login-separator {
    margin: 22px 0 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--muted);
    font-size: 9px;
    font-weight: 850;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.social-login-separator::before,
.social-login-separator::after { content: ""; flex: 1; height: 1px; background: var(--border); }

.social-btn-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.login-social-btn {
    min-height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid var(--border);
    border-radius: 13px;
    color: var(--dark);
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    font-size: 11px;
    font-weight: 850;
    transition: 0.2s;
}

body.dark-theme .login-social-btn { background: rgba(255,255,255,0.035); }
.login-social-btn:hover { border-color: rgba(79,140,255,0.45); background: var(--white); transform: translateY(-2px); }

.login-privacy-note {
    margin: 16px 0 0;
    color: var(--muted);
    font-size: 9px;
    font-weight: 650;
    line-height: 1.5;
    text-align: center;
}

.login-privacy-note i { margin-right: 4px; color: var(--green-dark); }

.login-footer {
    padding: 12px 24px 24px;
    color: var(--muted);
    font-size: 11px;
    font-weight: 700;
    text-align: center;
}

.quiz-toast {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 1000;
    max-width: min(360px, calc(100vw - 32px));
    padding: 14px 17px;
    border-radius: 15px;
    color: white;
    background: var(--navy);
    box-shadow: var(--shadow);
    opacity: 0;
    transform: translateY(18px);
    pointer-events: none;
    transition: 0.24s ease;
    font-size: 12px;
    font-weight: 750;
}

.quiz-toast.show { opacity: 1; transform: translateY(0); }
.quiz-toast.success { background: #187b40; }
.quiz-toast.warning { background: #a44713; }

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    50% { transform: translateX(5px); }
    75% { transform: translateX(-3px); }
}

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

@keyframes orbitFloat {
    0%, 100% { transform: translateY(0) rotate(0); }
    50% { transform: translateY(10px) rotate(4deg); }
}

.shake-input { animation: shake 0.32s ease; }

@media (max-width: 980px) {
    .login-wrapper { grid-template-columns: minmax(0, 0.86fr) minmax(410px, 1.14fr); }
    .login-showcase { padding: 42px 32px; }
    .showcase-content h1 { font-size: 42px; }
    .showcase-orbit { right: 28px; transform: scale(0.78); transform-origin: top right; }
}

@media (max-width: 800px) {
    .login-wrapper { width: min(620px, calc(100% - 28px)); grid-template-columns: 1fr; }
    .login-showcase { min-height: auto; padding: 34px; align-items: center; }
    .showcase-content h1 { max-width: 480px; font-size: 38px; }
    .showcase-features, .showcase-proof { display: none; }
    .showcase-orbit { opacity: 0.7; }
    .login-card { padding: 38px; }
}

@media (max-width: 720px) {
    .login-wrapper { margin-top: 22px; }
    .login-showcase { display: none; }
    .login-mobile-brand { display: inline-flex; }
}

@media (max-width: 480px) {
    .login-wrapper { width: calc(100% - 20px); margin-top: 14px; border-radius: 25px; }
    .login-card { padding: 24px 18px; }
    .login-card-top { margin-bottom: 22px; }
    .login-header h2 { font-size: 30px; }
    .form-options { align-items: flex-start; }
    .social-btn-row { grid-template-columns: 1fr; }
    .quiz-toast { right: 10px; bottom: 12px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}