:root {
    --color-primary: #0B5ED7;
    --color-primary-dark: #0A3D62;
    --color-primary-light: #38BDF8;
    --color-primary-sky: #0EA5E9;
    --color-bg-light: #FFFFFF;
    --color-bg-secondary: #F4F6F8;
    --color-text-dark: #2C2C2C;
    --color-accent: #D4AF37;
    --color-accent-light: #E4CA6F;
    --color-accent-dark: #B8962A;
    --color-border: #E5E7EB;
    --color-shadow: rgba(11, 94, 215, 0.1);
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-smooth: 300ms ease-in-out;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --font-family-base: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-family-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;

    --background: var(--color-bg-light);
    --text-color: var(--color-text-dark);
    --text-muted: #516070;
    --card-bg: var(--color-bg-light);
    --panel-bg: var(--color-bg-secondary);
    --primary-color: var(--color-primary);
    --primary-hover: var(--color-primary-dark);
    --accent-color: var(--color-accent);
    --input-bg: var(--color-bg-light);
    --input-border: var(--color-border);
    --input-focus: var(--color-primary);
    --shadow-main: 0 20px 55px rgba(11, 94, 215, 0.15);
    --shadow-soft: 0 8px 24px var(--color-shadow);
    --ring: rgba(212, 175, 55, 0.24);
    --login-card-glass-bg: rgba(255, 255, 255, 0.62);
    --login-card-border: rgba(255, 255, 255, 0.48);
    --login-card-shadow: 0 20px 54px rgba(15, 23, 42, 0.14);
    --login-card-shadow-hover: 0 26px 64px rgba(15, 23, 42, 0.18);
    --focus-ring-soft: 0 0 0 3px rgba(11, 94, 215, 0.18);
    --showcase-glow: radial-gradient(circle at 18% 22%, rgba(11, 94, 215, 0.12), transparent 56%);
    --showcase-mist: radial-gradient(circle at 72% 70%, rgba(212, 175, 55, 0.12), transparent 58%);
}

[data-theme="dark"] {
    --color-bg-light: #0F172A;
    --color-bg-secondary: #1E293B;
    --color-text-dark: #E5E7EB;
    --color-border: #334155;
    --color-shadow: rgba(200, 200, 200, 0.1);

    --background: #0E1A2B;
    --text-color: var(--color-text-dark);
    --text-muted: #A7B2C3;
    --card-bg: #1E293B;
    --panel-bg: #15253A;
    --primary-color: var(--color-primary-light);
    --primary-hover: var(--color-primary-sky);
    --accent-color: var(--color-accent-light);
    --input-bg: #223349;
    --input-border: var(--color-border);
    --input-focus: var(--color-primary-light);
    --shadow-main: 0 18px 45px rgba(15, 23, 42, 0.55);
    --shadow-soft: 0 10px 24px rgba(15, 23, 42, 0.4);
    --ring: rgba(228, 202, 111, 0.26);
    --login-card-glass-bg: rgba(22, 35, 54, 0.68);
    --login-card-border: rgba(229, 231, 235, 0.16);
    --login-card-shadow: 0 24px 62px rgba(2, 8, 20, 0.48);
    --login-card-shadow-hover: 0 30px 72px rgba(2, 8, 20, 0.58);
    --focus-ring-soft: 0 0 0 3px rgba(96, 165, 250, 0.22);
    --showcase-glow: radial-gradient(circle at 22% 20%, rgba(96, 165, 250, 0.12), transparent 58%);
    --showcase-mist: radial-gradient(circle at 78% 72%, rgba(249, 220, 92, 0.1), transparent 60%);
}

* {
    box-sizing: border-box;
}

html,
body {
    min-height: 100%;
}

html {
    color-scheme: light;
    scroll-behavior: smooth;
}

[data-theme="dark"] {
    color-scheme: dark;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-family-base);
    background: var(--background);
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.login-page,
.login-page *,
.theme-toggle {
    transition: background-color var(--transition-smooth), color var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth);
}

.theme-toggle {
    position: fixed;
    top: 24px;
    right: 24px;
    width: 46px;
    height: 46px;
    border: 1px solid var(--input-border);
    border-radius: 999px;
    background: var(--card-bg);
    box-shadow: var(--shadow-soft);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.theme-toggle:hover {
    border-color: var(--accent-color);
    transform: translateY(-1px);
}

.theme-toggle:focus-visible {
    outline: none;
    box-shadow: 0 0 0 4px var(--ring);
}

.theme-toggle__icon {
    position: absolute;
    font-size: 1.05rem;
    line-height: 1;
    transform: scale(1) rotate(0deg);
    opacity: 1;
    transition: transform var(--transition-smooth), opacity var(--transition-smooth);
}

.theme-toggle__icon--sun {
    opacity: 0;
    transform: scale(0.65) rotate(-28deg);
}

[data-theme="dark"] .theme-toggle__icon--moon {
    opacity: 0;
    transform: scale(0.65) rotate(28deg);
}

[data-theme="dark"] .theme-toggle__icon--sun {
    opacity: 1;
    transform: scale(1) rotate(0deg);
}

.theme-toggle.is-animating {
    transform: rotate(180deg);
}

.login-page {
    width: min(1220px, 100%);
    min-height: min(780px, calc(100vh - 48px));
    display: grid;
    grid-template-columns: 60% 40%;
    background: linear-gradient(120deg, var(--background) 0%, var(--panel-bg) 100%);
    box-shadow: var(--shadow-main);
    border-radius: 16px;
    position: relative;
    overflow: hidden;
}

.login-page::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(11, 94, 215, 0.08), transparent 45%, rgba(212, 175, 55, 0.14));
    opacity: 0.55;
    pointer-events: none;
}

.login-showcase {
    min-height: 100%;
    padding: 72px clamp(24px, 6vw, 96px);
    display: flex;
    align-items: center;
    position: relative;
    z-index: 1;
}

.login-showcase::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--showcase-glow), var(--showcase-mist);
    opacity: 0.8;
    pointer-events: none;
}

.brand-block {
    max-width: 640px;
    position: relative;
    z-index: 1;
}

.brand-logo {
    width: 88px;
    height: 88px;
    border-radius: 14px;
    background: var(--card-bg);
    border: 1px solid var(--input-border);
    box-shadow: var(--shadow-soft);
    display: grid;
    place-items: center;
    margin-bottom: 24px;
    overflow: hidden;
}

.brand-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: none;
}

.brand-logo img.is-visible {
    display: block;
}

.logo-fallback {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #BFC8D4, #E8EDF3);
}

.brand-kicker {
    margin: 0 0 14px;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent-color);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, rgba(212, 175, 55, 0.25) 100%);
    border: 1px solid var(--input-border);
    border-radius: 999px;
    padding: 0.5rem 0.75rem;
}

[data-theme="dark"] .brand-kicker {
    background: linear-gradient(135deg, #1E293B 0%, rgba(212, 175, 55, 0.3) 100%);
}

.brand-title {
    margin: 0;
    font-family: var(--font-family-heading);
    font-size: clamp(1.95rem, 3vw, 3rem);
    line-height: 1.2;
    color: var(--text-color);
    letter-spacing: -0.02em;
}

.brand-subtitle {
    margin: 20px 0 0;
    max-width: 560px;
    font-size: var(--font-size-base);
    line-height: 1.65;
    color: var(--text-muted);
    opacity: 0.94;
}

.login-panel {
    min-height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(24px, 5vw, 56px);
    position: relative;
    z-index: 1;
}

.login-card {
    width: min(474px, 100%);
    background: var(--login-card-glass-bg);
    border: 1px solid var(--login-card-border);
    border-radius: 16px;
    box-shadow: var(--login-card-shadow);
    padding: clamp(20px, 3.1vw, 28px);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: all 0.3s ease;
}

.login-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--login-card-shadow-hover);
}

.login-card__header h2 {
    margin: 0;
    font-family: var(--font-family-heading);
    font-size: clamp(1.35rem, 1.9vw, 1.72rem);
    line-height: 1.3;
    letter-spacing: -0.012em;
    color: #D4AF37;
    background: linear-gradient(135deg, #D4AF37 0%, #F9DC5C 50%, #B8892E 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

[data-theme="dark"] .login-card__header h2 {
    background: linear-gradient(135deg, #60A5FA 0%, #F9DC5C 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.login-card__header p {
    margin: 6px 0 0;
    color: var(--text-muted);
    font-size: 0.82rem;
    line-height: 1.55;
    opacity: 0.8;
}

.login-form {
    margin-top: 18px;
    display: grid;
    gap: 13px;
}

.login-alert {
    padding: 0.85rem 1rem;
    border-radius: 12px;
    font-size: 0.84rem;
    font-weight: 700;
    line-height: 1.45;
}

.login-alert--error {
    color: #991b1b;
    background: rgba(254, 226, 226, 0.88);
    border: 1px solid rgba(248, 113, 113, 0.38);
}

.login-alert--status {
    color: #166534;
    background: rgba(220, 252, 231, 0.88);
    border: 1px solid rgba(34, 197, 94, 0.32);
}

[data-theme="dark"] .login-alert--error {
    color: #fecaca;
    background: rgba(127, 29, 29, 0.36);
    border-color: rgba(248, 113, 113, 0.34);
}

[data-theme="dark"] .login-alert--status {
    color: #bbf7d0;
    background: rgba(20, 83, 45, 0.34);
    border-color: rgba(74, 222, 128, 0.28);
}

.field {
    display: grid;
    gap: 6px;
}

.field__label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    letter-spacing: 0.01em;
}

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

.field__icon {
    position: absolute;
    left: 12px;
    width: 24px;
    height: 24px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 0.8rem;
    background: rgba(11, 94, 215, 0.08);
    pointer-events: none;
}

.field__icon svg {
    width: 14px;
    height: 14px;
}

[data-theme="dark"] .field__icon {
    background: rgba(56, 189, 248, 0.15);
}

.field input {
    width: 100%;
    height: 46px;
    border-radius: 12px;
    border: 1px solid var(--input-border);
    background: var(--input-bg);
    color: var(--text-color);
    padding: 0 42px 0 46px;
    font-size: var(--font-size-base);
    transition: border-color var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
}

.field input:hover {
    border-color: rgba(11, 94, 215, 0.36);
}

[data-theme="dark"] .field input:hover {
    border-color: rgba(96, 165, 250, 0.46);
}

.field input::placeholder {
    color: var(--text-muted);
}

.field input:focus-visible {
    outline: none;
    border-color: var(--input-focus);
    box-shadow: var(--focus-ring-soft);
}

.field input[aria-invalid="true"] {
    border-color: #c53030;
    box-shadow: 0 0 0 3px rgba(197, 48, 48, 0.15);
}

[data-theme="dark"] .field input[aria-invalid="true"] {
    border-color: #f87171;
    box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.2);
}

.field__toggle {
    position: absolute;
    right: 8px;
    width: 34px;
    height: 32px;
    border: 0;
    border-radius: 10px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.92rem;
    font-weight: 700;
    transition: color var(--transition-base), background-color var(--transition-base), transform var(--transition-fast);
}

.field__toggle i,
.field__toggle svg {
    pointer-events: none;
}

.field__toggle:hover {
    color: var(--primary-color);
    background: rgba(11, 94, 215, 0.08);
    transform: translateY(-1px);
}

.field__error {
    min-height: 0.9em;
    color: #c53030;
    font-size: 0.74rem;
    font-weight: 600;
}

[data-theme="dark"] .field__error {
    color: #fda4af;
}

.login-form__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding-top: 2px;
}

.remember {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.remember input {
    accent-color: var(--primary-color);
}

.forgot-link {
    color: var(--primary-color);
    font-size: var(--font-size-sm);
    text-decoration: none;
    font-weight: 600;
}

.forgot-link:hover {
    text-decoration: underline;
}

.btn-submit {
    width: 100%;
    min-height: 52px;
    border: 0;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-sky) 100%);
    color: #ffffff;
    font-weight: 700;
    font-size: var(--font-size-base);
    letter-spacing: 0.01em;
    cursor: pointer;
    box-shadow: 0 12px 25px rgba(11, 94, 215, 0.25);
    transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
}

.btn-submit:hover {
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary-color) 100%);
    transform: translateY(-1px);
    box-shadow: 0 16px 30px rgba(11, 94, 215, 0.3);
}

.btn-submit:active {
    transform: translateY(0);
    box-shadow: 0 10px 20px rgba(11, 94, 215, 0.22);
}

.btn-submit:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring-soft);
}

.login-card__footer {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid rgba(15, 23, 42, 0.09);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

[data-theme="dark"] .login-card__footer {
    border-top-color: rgba(229, 231, 235, 0.16);
}

.login-card__footer p {
    margin: 0;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.76rem;
    line-height: 1.5;
    opacity: 0.92;
}

.login-card__footer p::before {
    content: '🔒';
    font-size: 0.8rem;
    opacity: 0.75;
    transform: translateY(-1px);
}

.login-register-link {
    margin-top: 8px;
    display: inline-flex;
    font-size: 0.8rem;
    font-weight: 700;
}

.fade-in {
    opacity: 0;
    transform: translateY(12px);
    animation: fadeInUp 0.58s ease forwards;
}

.fade-in--delay {
    animation-delay: 0.12s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 1024px) {
    body {
        align-items: flex-start;
        padding: 0;
    }

    .login-page {
        grid-template-columns: 1fr;
        min-height: 100vh;
        width: 100%;
        border-radius: 0;
    }

    .login-showcase {
        justify-content: center;
        text-align: center;
        padding: 92px 24px 12px;
    }

    .brand-block {
        max-width: 760px;
    }

    .brand-logo {
        margin: 0 auto 24px;
    }

    .brand-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .login-panel {
        min-height: auto;
        align-items: flex-start;
        padding: 24px;
    }

    .login-card {
        width: 100%;
    }
}

@media (max-width: 640px) {
    body {
        padding: 0;
    }

    .login-page {
        border-radius: 0;
        width: 100%;
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .theme-toggle {
        top: 16px;
        right: 16px;
    }

    .login-showcase {
        display: none;
    }

    .login-panel {
        padding: 24px;
        width: 100%;
        min-height: 100vh;
        align-items: center;
        justify-content: center;
    }

    .field input {
        min-height: 52px;
    }

    .login-form__meta {
        flex-wrap: wrap;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition-duration: 0.01ms !important;
        transition-delay: 0ms !important;
        scroll-behavior: auto !important;
    }

    .login-card:hover,
    .btn-submit:hover,
    .field__toggle:hover {
        transform: none !important;
    }
}