:root {
    --ink-950: #0a1f2d;
    --ink-900: #112f44;
    --ink-700: #1f4f70;
    --mint-500: #2bbbad;
    --mint-400: #41d3c2;
    --sun-400: #ffbe55;
    --sun-500: #f2a93c;
    --paper-100: #f6f9fc;
    --paper-200: #e8eef4;
    --paper-300: #d8e2ec;
    --text-900: #102230;
    --text-700: #2d465b;
    --danger-500: #d94848;
    --white: #ffffff;
    --radius-xl: 22px;
    --radius-lg: 16px;
    --radius-md: 12px;
    --shadow-soft: 0 16px 40px rgba(16, 34, 48, 0.12);
    --shadow-card: 0 10px 30px rgba(17, 47, 68, 0.1);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    font-family: 'Manrope', sans-serif;
    color: var(--text-900);
    background: radial-gradient(circle at 15% 15%, #d5fff7 0%, transparent 38%),
        radial-gradient(circle at 88% 12%, #ffe0a8 0%, transparent 34%),
        linear-gradient(145deg, #f3f9ff 0%, #eef4fb 45%, #f9f5ef 100%);
}

.portal-body {
    min-height: 100vh;
    padding: 24px;
}

.portal-frame {
    max-width: 1100px;
    margin: 0 auto;
}

.portal-navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 20px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(17, 47, 68, 0.08);
}

.logo {
    font-family: 'Sora', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--ink-900);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.nav-links a {
    text-decoration: none;
    color: var(--ink-900);
    font-weight: 700;
    font-size: 0.92rem;
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid transparent;
    transition: 0.22s ease;
}

.nav-links a:hover {
    border-color: rgba(31, 79, 112, 0.2);
    background: rgba(43, 187, 173, 0.12);
    transform: translateY(-1px);
}

.theme-switch-fab {
    position: fixed;
    top: 18px;
    right: 22px;
    z-index: 1000;
}

.theme-switch input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.theme-track {
    width: 62px;
    height: 34px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    padding: 3px;
    cursor: pointer;
    background: linear-gradient(145deg, #fde6aa, #f6bd54);
    box-shadow: 0 6px 18px rgba(16, 34, 48, 0.25);
    transition: background 0.3s ease;
}

.theme-knob {
    width: 28px;
    height: 28px;
    border-radius: 999px;
    background: #ffffff;
    display: grid;
    place-items: center;
    position: relative;
    transform: translateX(0);
    transition: transform 0.3s ease, background 0.3s ease;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.22);
}

.theme-knob i {
    position: absolute;
    font-size: 0.78rem;
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.sun-icon {
    color: #f0a321;
    opacity: 1;
    transform: scale(1);
}

.moon-icon {
    color: #d7e0ea;
    opacity: 0;
    transform: scale(0.75);
}

.theme-switch input:checked + .theme-track {
    background: linear-gradient(145deg, #4b5662, #353d48);
}

.theme-switch input:checked + .theme-track .theme-knob {
    transform: translateX(28px);
    background: #1f252e;
}

.theme-switch input:checked + .theme-track .sun-icon {
    opacity: 0;
    transform: scale(0.75);
}

.theme-switch input:checked + .theme-track .moon-icon {
    opacity: 1;
    transform: scale(1);
}

.container {
    margin-top: 24px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(6px);
    border: 1px solid rgba(17, 47, 68, 0.08);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-soft);
    padding: 28px;
}

.portal-copyright {
    margin: 16px 4px 0;
    text-align: center;
    font-size: 0.78rem;
    color: rgba(16, 34, 48, 0.72);
    font-weight: 600;
}

.landing-shell {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 18px;
}

.landing-hero {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-xl);
    border: 1px solid rgba(17, 47, 68, 0.14);
    background: radial-gradient(circle at 12% 15%, rgba(65, 211, 194, 0.22), transparent 38%),
        radial-gradient(circle at 88% 15%, rgba(255, 190, 85, 0.2), transparent 36%),
        linear-gradient(160deg, #ffffff 0%, #f3fbff 56%, #fff8eb 100%);
    box-shadow: var(--shadow-soft);
    padding: 30px;
}

.landing-kicker {
    margin: 0 0 10px;
    display: inline-block;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(43, 187, 173, 0.14);
    color: #1d5f67;
    font-size: 0.74rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.landing-title {
    margin: 0;
    font-family: 'Sora', sans-serif;
    font-size: clamp(2rem, 5vw, 2.8rem);
    line-height: 1.08;
    color: #0d2f45;
}

.landing-copy {
    margin: 14px 0 20px;
    max-width: 62ch;
    color: var(--text-700);
    font-size: 1rem;
}

.landing-actions {
    margin-bottom: 18px;
}

.landing-cta {
    border: none;
    border-radius: 12px;
    padding: 11px 16px;
    font-size: 0.92rem;
    font-weight: 800;
    color: var(--white);
    background: linear-gradient(145deg, #1f4f70, #112f44);
    cursor: pointer;
}

.landing-cta:hover {
    filter: brightness(1.08);
}

.landing-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(120px, 1fr));
    gap: 10px;
}

.landing-stat {
    border-radius: 14px;
    border: 1px solid rgba(17, 47, 68, 0.12);
    background: rgba(255, 255, 255, 0.78);
    padding: 12px;
}

.stat-label {
    display: block;
    color: var(--text-700);
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 800;
}

.stat-value {
    display: block;
    margin-top: 4px;
    color: var(--ink-900);
    font-weight: 800;
    font-size: 0.9rem;
}

.landing-launch {
    border-radius: var(--radius-xl);
    border: 1px solid rgba(17, 47, 68, 0.14);
    background: linear-gradient(165deg, #ffffff, #f4f9ff);
    box-shadow: var(--shadow-card);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.launch-title {
    margin: 0;
    font-family: 'Sora', sans-serif;
    font-size: 1.3rem;
    color: var(--ink-900);
}

.launch-copy {
    margin: 0 0 6px;
    color: var(--text-700);
    font-size: 0.93rem;
}

.landing-open-btn {
    margin-top: 6px;
    border: none;
    border-radius: 12px;
    padding: 11px 12px;
    font-size: 0.9rem;
    font-weight: 800;
    color: #0b2537;
    background: linear-gradient(145deg, var(--sun-400), var(--sun-500));
    cursor: pointer;
}

.landing-open-btn:hover {
    filter: brightness(1.04);
}

.dashboard-hero {
    display: grid;
    grid-template-columns: 1.8fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

.hero-card,
.contest-card,
.module-card {
    border-radius: var(--radius-lg);
    border: 1px solid rgba(17, 47, 68, 0.1);
    background: linear-gradient(160deg, #ffffff 0%, #f5fbff 100%);
    box-shadow: var(--shadow-card);
}

.hero-card {
    padding: 28px;
}

.hero-title {
    margin: 0;
    font-size: clamp(1.5rem, 2.6vw, 2rem);
    font-family: 'Sora', sans-serif;
    line-height: 1.2;
}

.hero-subtitle {
    margin: 12px 0 0;
    color: var(--text-700);
    font-size: 0.98rem;
}

.contest-card {
    padding: 22px;
}

.contest-label {
    margin: 0 0 10px;
    font-size: 0.9rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--ink-700);
}

.contest-select {
    width: 100%;
    border: 1px solid rgba(17, 47, 68, 0.22);
    border-radius: var(--radius-md);
    background: #ffffff;
    font-size: 0.96rem;
    padding: 11px 12px;
    outline: none;
}

.contest-select:focus {
    border-color: var(--mint-500);
    box-shadow: 0 0 0 4px rgba(43, 187, 173, 0.18);
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

.module-card {
    padding: 18px;
}

.module-title {
    margin: 0;
    font-family: 'Sora', sans-serif;
    font-size: 1.05rem;
    color: var(--ink-900);
}

.module-copy {
    margin: 8px 0 16px;
    color: var(--text-700);
    font-size: 0.92rem;
}

.module-link {
    display: inline-block;
    text-decoration: none;
    color: var(--white);
    background: linear-gradient(145deg, var(--ink-700), var(--ink-900));
    padding: 9px 14px;
    border-radius: 10px;
    font-size: 0.88rem;
    font-weight: 700;
}

.module-link:hover {
    filter: brightness(1.08);
}

.login-body {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-shell {
    width: min(460px, 100%);
}

.login-box {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 24px;
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(17, 47, 68, 0.1);
    padding: 28px;
}

.login-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ink-700);
    background: rgba(43, 187, 173, 0.13);
    border-radius: 999px;
    padding: 6px 10px;
    margin-bottom: 12px;
}

.login-box h2 {
    margin: 0 0 18px;
    font-family: 'Sora', sans-serif;
    font-size: 1.6rem;
    color: var(--ink-900);
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.87rem;
    font-weight: 700;
    color: var(--ink-900);
}

.form-row {
    margin-bottom: 14px;
}

.login-box input {
    width: 100%;
    border-radius: var(--radius-md);
    border: 1px solid rgba(17, 47, 68, 0.24);
    padding: 11px 12px;
    font-size: 0.95rem;
    outline: none;
}

.login-box input:focus {
    border-color: var(--mint-500);
    box-shadow: 0 0 0 4px rgba(43, 187, 173, 0.18);
}

.login-box button {
    width: 100%;
    margin-top: 4px;
    border: none;
    border-radius: var(--radius-md);
    padding: 12px;
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--white);
    background: linear-gradient(145deg, var(--ink-700), var(--ink-900));
    cursor: pointer;
}

.login-box button:hover {
    filter: brightness(1.08);
}

.error {
    background: rgba(217, 72, 72, 0.12);
    border: 1px solid rgba(217, 72, 72, 0.28);
    color: #9d2a2a;
    padding: 10px 12px;
    border-radius: 10px;
    margin-bottom: 14px;
    font-size: 0.9rem;
    font-weight: 700;
}

html[data-theme="dark"] {
    --ink-950: #f2f3f5;
    --ink-900: #e3e5e8;
    --ink-700: #b5bac1;
    --text-900: #f2f3f5;
    --text-700: #b5bac1;
    --paper-100: #1e1f22;
    --paper-200: #2b2d31;
    --paper-300: #313338;
    --shadow-soft: 0 16px 40px rgba(0, 0, 0, 0.45);
    --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.38);
}

html[data-theme="dark"] body {
    background: radial-gradient(circle at 16% 12%, #2b2d31 0%, transparent 34%),
        radial-gradient(circle at 84% 12%, #313338 0%, transparent 36%),
        linear-gradient(150deg, #1e1f22 0%, #25262b 45%, #2b2d31 100%);
    color: var(--text-900);
}

html[data-theme="dark"] .portal-navbar,
html[data-theme="dark"] .container,
html[data-theme="dark"] .landing-hero,
html[data-theme="dark"] .landing-launch,
html[data-theme="dark"] .login-box {
    background: rgba(43, 45, 49, 0.9);
    border-color: rgba(242, 243, 245, 0.12);
}

html[data-theme="dark"] .landing-hero {
    background: radial-gradient(circle at 12% 15%, rgba(99, 102, 241, 0.18), transparent 38%),
        radial-gradient(circle at 88% 15%, rgba(114, 137, 218, 0.18), transparent 36%),
        linear-gradient(160deg, #2b2d31 0%, #313338 56%, #36393f 100%);
}

html[data-theme="dark"] .logo,
html[data-theme="dark"] .landing-title,
html[data-theme="dark"] .launch-title,
html[data-theme="dark"] .login-box h2 {
    color: #e7f2ff;
}

html[data-theme="dark"] .landing-kicker {
    background: rgba(114, 137, 218, 0.2);
    color: #d8dcff;
}

html[data-theme="dark"] .landing-copy,
html[data-theme="dark"] .launch-copy,
html[data-theme="dark"] .stat-label,
html[data-theme="dark"] .portal-copyright,
html[data-theme="dark"] .form-label {
    color: #a8c0d8;
}

html[data-theme="dark"] .landing-stat {
    background: rgba(20, 35, 51, 0.88);
    border-color: rgba(151, 191, 223, 0.2);
}

html[data-theme="dark"] .stat-value {
    color: #d8e9f8;
}

html[data-theme="dark"] .nav-links a {
    color: #f2f3f5;
    border-color: rgba(242, 243, 245, 0.16);
    background: rgba(255, 255, 255, 0.04);
}

html[data-theme="dark"] .contest-select,
html[data-theme="dark"] .login-box input {
    background: #1e1f22;
    color: #f2f3f5;
    border-color: rgba(242, 243, 245, 0.16);
}

@media (max-width: 860px) {
    .portal-body {
        padding: 14px;
    }

    .container {
        padding: 18px;
    }

    .dashboard-hero,
    .landing-shell {
        grid-template-columns: 1fr;
    }

    .landing-hero {
        padding: 22px;
    }

    .landing-stats {
        grid-template-columns: 1fr;
    }

    .portal-navbar {
        align-items: flex-start;
        flex-direction: column;
    }
}

.admin-launch {
    grid-column: 1 / -1;
    background: radial-gradient(circle at 8% 14%, rgba(65, 211, 194, 0.2), transparent 32%),
        radial-gradient(circle at 92% 18%, rgba(255, 190, 85, 0.22), transparent 34%),
        linear-gradient(150deg, #fbfeff 0%, #f4fbff 45%, #fff8ef 100%);
}

.users-page {
    display: grid;
    gap: 20px;
}

.users-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.users-kicker {
    margin: 0 0 6px;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 800;
    color: var(--ink-700);
}

.users-title {
    margin: 0;
    font-family: 'Sora', sans-serif;
    font-size: clamp(1.8rem, 3vw, 2.3rem);
}

.users-subtitle {
    margin: 10px 0 0;
    color: var(--text-700);
    font-weight: 600;
}

.users-back-link {
    text-decoration: none;
    padding: 10px 14px;
    border-radius: 10px;
    border: 1px solid rgba(17, 47, 68, 0.2);
    color: var(--text-900);
    font-weight: 700;
}

.admin-current-users-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    border-radius: 14px;
    padding: 11px 16px;
    font-weight: 800;
    color: #fff;
    background: linear-gradient(145deg, #1f4f70, #112f44);
    border: 1px solid rgba(16, 34, 48, 0.15);
    box-shadow: 0 10px 24px rgba(17, 47, 68, 0.28);
    transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.admin-current-users-btn:hover {
    transform: translateY(-2px);
    filter: brightness(1.06);
    box-shadow: 0 14px 30px rgba(17, 47, 68, 0.3);
}

.admin-current-users-btn-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
}

.users-alerts {
    display: grid;
    gap: 8px;
}

.users-alert {
    border-radius: 10px;
    padding: 10px 12px;
    font-weight: 700;
}

.users-alert-ok {
    background: rgba(43, 187, 173, 0.14);
    color: #155f58;
}

.users-alert-err {
    background: rgba(217, 72, 72, 0.13);
    color: #8b1f1f;
}

.users-tools {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.users-form {
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.92), rgba(243, 250, 255, 0.88));
    border: 1px solid rgba(17, 47, 68, 0.14);
    border-radius: 18px;
    padding: 20px;
    display: grid;
    gap: 10px;
    box-shadow: 0 16px 30px rgba(17, 47, 68, 0.12);
}

.users-form h2 {
    margin: 0 0 6px;
    font-size: 1.08rem;
}

.users-form label {
    font-size: 0.84rem;
    font-weight: 700;
}

.users-form input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid rgba(17, 47, 68, 0.22);
    border-radius: 10px;
    background: #fff;
}

.users-select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid rgba(17, 47, 68, 0.22);
    border-radius: 10px;
    background: #fff;
    font-weight: 700;
}

.users-form button,
.landing-open-btn[href] {
    display: inline-block;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: 10px;
    padding: 10px 12px;
    font-weight: 800;
    cursor: pointer;
    color: #fff;
    background: linear-gradient(145deg, #1f4f70, #112f44);
}

.users-form button.users-remove-mode,
.users-form-danger button {
    background: linear-gradient(145deg, #bf3c3c, #962d2d);
}

.users-table-wrap {
    border: 1px solid rgba(17, 47, 68, 0.16);
    border-radius: 18px;
    overflow: auto;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(246, 251, 255, 0.92));
    box-shadow: 0 16px 30px rgba(17, 47, 68, 0.1);
}

.users-table {
    width: 100%;
    border-collapse: collapse;
}

.users-table th,
.users-table td {
    text-align: left;
    padding: 12px;
    border-bottom: 1px solid rgba(17, 47, 68, 0.09);
}

.users-table th {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

html[data-theme="dark"] .users-form,
html[data-theme="dark"] .users-table-wrap {
    background: linear-gradient(170deg, rgba(30, 36, 44, 0.94), rgba(24, 30, 37, 0.92));
    border-color: rgba(216, 229, 241, 0.18);
}

html[data-theme="dark"] .users-form input {
    background: rgba(18, 22, 28, 0.94);
    color: #e9f2fb;
    border-color: rgba(216, 229, 241, 0.28);
}

html[data-theme="dark"] .users-select {
    background: rgba(18, 22, 28, 0.94);
    color: #e9f2fb;
    border-color: rgba(216, 229, 241, 0.28);
}

html[data-theme="dark"] .users-back-link {
    color: #e9f2fb;
    border-color: rgba(216, 229, 241, 0.24);
}

html[data-theme="dark"] .users-subtitle {
    color: #c2d6ea;
}

html[data-theme="dark"] .admin-current-users-btn {
    background: linear-gradient(145deg, #48607a, #2d3b4c);
    border-color: rgba(216, 229, 241, 0.2);
}

@media (max-width: 860px) {
    .users-tools {
        grid-template-columns: 1fr;
    }

    .users-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 768px) {
    .portal-body {
        padding: 10px;
    }

    .theme-switch-fab {
        top: 10px;
        right: 10px;
    }

    .portal-frame {
        max-width: 100%;
    }

    .container {
        margin-top: 14px;
        padding: 14px;
        border-radius: 16px;
    }

    .landing-title {
        font-size: clamp(1.5rem, 7vw, 2rem);
    }

    .landing-copy {
        font-size: 0.92rem;
        margin-bottom: 14px;
    }

    .landing-launch,
    .landing-hero,
    .users-form,
    .users-table-wrap {
        border-radius: 14px;
        padding: 14px;
    }

    .contest-select,
    .landing-open-btn,
    .users-form button {
        min-height: 42px;
        font-size: 0.88rem;
    }

    .users-title {
        font-size: clamp(1.35rem, 6vw, 1.7rem);
    }

    .users-subtitle {
        font-size: 0.88rem;
    }

    .users-table th,
    .users-table td {
        padding: 10px;
        font-size: 0.84rem;
    }
}

@media (max-width: 520px) {
    .logo {
        font-size: 0.98rem;
    }

    .nav-links {
        width: 100%;
        justify-content: flex-end;
    }

    .nav-links a {
        padding: 7px 10px;
        font-size: 0.82rem;
    }

    .landing-kicker,
    .users-kicker {
        font-size: 0.68rem;
    }

    .landing-pill {
        font-size: 0.7rem;
        padding: 6px 9px;
    }
}