:root {
    --color-primary: #1E40AF;
    --color-on-primary: #FFFFFF;
    --color-secondary: #3B82F6;
    --color-accent: #D97706;
    --color-accent-hover: #B45309;
    --color-destructive: #DC2626;

    /* Dark canvas */
    --canvas-deep: #020617;
    --canvas-mid: #0B1530;
    --canvas-light: #122044;
    --hero-text: #F8FAFC;
    --hero-text-soft: #BFDBFE;
    --hero-text-muted: #93C5FD;

    /* Glass panel (same family as canvas) */
    --glass-bg: rgba(11, 22, 48, 0.55);
    --glass-bg-strong: rgba(8, 16, 36, 0.72);
    --glass-border: rgba(147, 197, 253, 0.16);
    --glass-border-hover: rgba(147, 197, 253, 0.28);
    --glass-highlight: rgba(255, 255, 255, 0.06);
    --input-bg: rgba(2, 8, 23, 0.42);
    --input-text: #F1F5F9;
    --input-placeholder: #64748B;
    --shadow-card:
        0 4px 24px rgba(2, 6, 23, 0.28),
        0 0 48px rgba(30, 64, 175, 0.12),
        inset 0 1px 0 var(--glass-highlight);
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
}

body {
    position: relative;
    margin: 0;
    min-height: 100vh;
    overflow-x: hidden;
    font-family: "Fira Sans", "Segoe UI", sans-serif;
    color: var(--hero-text);
    background:
        radial-gradient(ellipse 80% 60% at 15% 20%, rgba(59, 130, 246, 0.28), transparent 55%),
        radial-gradient(ellipse 55% 45% at 85% 75%, rgba(30, 64, 175, 0.35), transparent 50%),
        radial-gradient(ellipse 40% 30% at 70% 15%, rgba(217, 119, 6, 0.1), transparent 45%),
        linear-gradient(145deg, var(--canvas-deep) 0%, var(--canvas-mid) 42%, var(--canvas-light) 100%);
}

/* Subtle grid texture */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0.35;
    background-image:
        linear-gradient(rgba(148, 163, 184, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, 0.06) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 90% 80% at 30% 40%, black 20%, transparent 75%);
}

body::after {
    content: "";
    position: fixed;
    right: -12rem;
    bottom: -14rem;
    width: 32rem;
    height: 32rem;
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.18) 0%, transparent 68%);
    filter: blur(8px);
}

.login-shell {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: grid;
    grid-template-columns: minmax(300px, 1.35fr) minmax(340px, 420px);
    gap: clamp(2.5rem, 5vw, 5rem);
    align-items: center;
    padding: clamp(2rem, 5vw, 4rem) clamp(2rem, 6vw, 5rem);
    max-width: 1320px;
    margin: 0 auto;
}

.login-hero {
    padding: 0.5rem 0;
}

.login-hero-brand {
    display: inline-flex;
    align-items: center;
    margin-bottom: 1.15rem;
}

.login-hero-logo {
    display: block;
    height: clamp(3.5rem, 8vw, 5rem);
    width: auto;
    border-radius: 1rem;
    box-shadow: 0 16px 40px rgba(2, 6, 23, 0.28);
    object-fit: contain;
}

.login-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.42rem 0.9rem;
    border-radius: 999px;
    border: 1px solid rgba(147, 197, 253, 0.28);
    background: rgba(15, 23, 42, 0.45);
    backdrop-filter: blur(8px);
    color: var(--hero-text-soft);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.login-badge::before {
    content: "";
    width: 0.45rem;
    height: 0.45rem;
    border-radius: 50%;
    background: linear-gradient(135deg, #38BDF8, var(--color-secondary));
    box-shadow: 0 0 10px rgba(56, 189, 248, 0.65);
}

.login-hero h1 {
    margin: 0 0 1.1rem;
    max-width: 680px;
    font-size: clamp(2.25rem, 4.8vw, 3.75rem);
    line-height: 1.08;
    letter-spacing: -0.035em;
    font-weight: 700;
}

.login-hero h1 span {
    background: linear-gradient(135deg, #FFFFFF 0%, #BFDBFE 38%, #60A5FA 72%, #A5B4FC 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.login-hero p {
    margin: 0;
    max-width: 520px;
    font-size: 1.06rem;
    line-height: 1.8;
    color: var(--hero-text-muted);
    font-weight: 400;
}

.login-card {
    position: relative;
    padding: 2.1rem 2rem 1.85rem;
    border-radius: 1.35rem;
    background:
        linear-gradient(165deg, rgba(22, 40, 78, 0.52) 0%, rgba(10, 18, 40, 0.62) 100%);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-card);
    isolation: isolate;
}

.login-card::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    background: radial-gradient(ellipse 90% 60% at 50% -10%, rgba(59, 130, 246, 0.14), transparent 55%);
}

.login-card::after {
    content: "";
    position: absolute;
    top: 0;
    left: 2rem;
    right: 2rem;
    height: 2px;
    border-radius: 0 0 4px 4px;
    background: linear-gradient(90deg, transparent, rgba(96, 165, 250, 0.7) 35%, rgba(217, 119, 6, 0.55) 65%, transparent);
    pointer-events: none;
    opacity: 0.85;
}

.login-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 0.35rem 0 1.85rem;
}

.login-card-header,
.login-form,
.login-footer {
    position: relative;
    z-index: 1;
}

.login-logo {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.login-logo-img {
    display: block;
    height: 2.75rem;
    width: auto;
    border-radius: 0.65rem;
    box-shadow: 0 4px 14px rgba(2, 6, 23, 0.18);
    object-fit: contain;
}

.login-card-header h2 {
    margin: 0;
    font-size: 1.5rem;
    line-height: 1.25;
    font-weight: 700;
    color: var(--hero-text);
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.05rem;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.form-field span {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--hero-text-soft);
}

.form-field input {
    width: 100%;
    padding: 0.88rem 1rem;
    border-radius: 0.7rem;
    border: 1px solid rgba(148, 163, 184, 0.18);
    background: var(--input-bg);
    color: var(--input-text);
    font-size: 0.96rem;
    outline: none;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

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

.form-field input:hover {
    border-color: var(--glass-border-hover);
    background: rgba(2, 8, 23, 0.55);
}

.form-field input:focus {
    border-color: rgba(96, 165, 250, 0.65);
    background: rgba(2, 8, 23, 0.62);
    box-shadow:
        0 0 0 3px rgba(59, 130, 246, 0.18),
        inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.login-error {
    padding: 0.75rem 0.9rem;
    border-radius: 0.65rem;
    border: 1px solid rgba(248, 113, 113, 0.28);
    background: rgba(239, 68, 68, 0.12);
    color: #FECACA;
    font-size: 0.875rem;
    line-height: 1.55;
}

.login-btn {
    margin-top: 0.35rem;
    padding: 0.92rem 1rem;
    border: none;
    border-radius: 0.7rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, #2563EB 52%, #1D4ED8 100%);
    color: var(--color-on-primary);
    font-size: 0.97rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    cursor: pointer;
    box-shadow:
        0 12px 28px rgba(30, 64, 175, 0.38),
        inset 0 1px 0 rgba(255, 255, 255, 0.12);
    transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
}

.login-btn:hover {
    transform: translateY(-1px);
    box-shadow:
        0 16px 36px rgba(30, 64, 175, 0.45),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.login-btn:active {
    transform: translateY(0);
}

.login-btn:disabled {
    opacity: 0.72;
    cursor: wait;
    transform: none;
    box-shadow: none;
}

.login-footer {
    margin-top: 1.3rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(148, 163, 184, 0.12);
    color: var(--hero-text-muted);
    font-size: 0.82rem;
    line-height: 1.7;
    text-align: center;
    opacity: 0.88;
}

.hidden {
    display: none !important;
}

@media (max-width: 960px) {
    .login-shell {
        grid-template-columns: 1fr;
        gap: 2.25rem;
        padding: 2.5rem 1.35rem;
        max-width: 440px;
    }

    .login-hero {
        text-align: center;
    }

    .login-hero h1,
    .login-hero p {
        margin-left: auto;
        margin-right: auto;
    }

    .login-badge {
        margin: 0 auto;
    }

    .login-hero-brand {
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 640px) {
    .login-shell {
        padding: 1.75rem 1rem;
    }

    .login-hero h1 {
        font-size: 2rem;
    }

    .login-card {
        padding: 1.5rem 1.25rem 1.35rem;
        border-radius: 1.1rem;
    }

    .login-card::after {
        left: 1.25rem;
        right: 1.25rem;
    }
}

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