/* public/css/login.css */
:root {
    --kh-bg-1: #081120;
    --kh-bg-2: #132238;
    --kh-surface: rgba(255, 255, 255, 0.9);
    --kh-surface-strong: #ffffff;
    --kh-border: rgba(255, 255, 255, 0.18);
    --kh-text: #0f172a;
    --kh-muted: #64748b;
    --kh-primary: #3fa3c9;
    --kh-primary-dark: #256b88;
    --kh-danger-bg: #fef2f2;
    --kh-danger-border: #fecaca;
    --kh-danger-text: #b91c1c;
    --kh-input-border: #d9e1ea;
    --kh-shadow-xl: 0 30px 80px rgba(2, 8, 23, 0.38);
    --kh-shadow-md: 0 16px 40px rgba(15, 23, 42, 0.12);
    --kh-radius-xl: 28px;
    --kh-radius-lg: 18px;
    --kh-radius-md: 14px;
}

* {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    color: var(--kh-text);
    font-family: Inter, "Segoe UI", Arial, sans-serif;
    background:
        radial-gradient(circle at top left, rgba(63, 163, 201, 0.18), transparent 30%),
        radial-gradient(circle at bottom right, rgba(134, 33, 131, 0.18), transparent 25%),
        linear-gradient(135deg, var(--kh-bg-1) 0%, var(--kh-bg-2) 100%);
}

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.login-shell {
    width: 100%;
    max-width: 1180px;
    min-height: 700px;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    overflow: hidden;
    border: 1px solid var(--kh-border);
    border-radius: var(--kh-radius-xl);
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(14px);
    box-shadow: var(--kh-shadow-xl);
}

.login-panel {
    position: relative;
}

.login-panel--brand {
    display: flex;
    align-items: stretch;
    padding: 56px;
    color: #ffffff;
    background:
        linear-gradient(160deg, rgba(63, 163, 201, 0.14), rgba(255, 255, 255, 0.02)),
        linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
}

.login-panel--brand::before {
    content: "";
    position: absolute;
    inset: auto -80px -80px auto;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(63, 163, 201, 0.22), transparent 70%);
    pointer-events: none;
}

.login-brand {
    position: relative;
    z-index: 1;
    max-width: 520px;
    min-height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.login-brand__highlights {
    display: grid;
    gap: 14px;
}

.login-brand__logo {
    width: min(100%, 260px);
    height: auto;
    margin-top: auto;
    padding-top: 40px;
    display: block;
    opacity: 0.92;
}

.login-brand__badge {
    display: inline-flex;
    align-self: flex-start;
    margin-bottom: 20px;
    padding: 8px 14px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    color: #e2e8f0;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.login-brand__title {
    margin: 0 0 16px;
    font-size: clamp(2rem, 3vw, 3.2rem);
    line-height: 1.1;
    letter-spacing: -0.04em;
}

.login-brand__text {
    margin: 0 0 32px;
    max-width: 46ch;
    color: rgba(255, 255, 255, 0.82);
    font-size: 1.02rem;
    line-height: 1.7;
}

.login-highlight {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #e2e8f0;
    font-size: 0.97rem;
}

.login-highlight__dot {
    width: 10px;
    height: 10px;
    flex: 0 0 10px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3fa3c9 0%, #89b326 100%);
    box-shadow: 0 0 0 6px rgba(63, 163, 201, 0.12);
}

.login-panel--form {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.88));
}

.login-card {
    width: 100%;
    max-width: 420px;
    padding: 34px;
    border: 1px solid rgba(148, 163, 184, 0.16);
    border-radius: 24px;
    background: var(--kh-surface-strong);
    box-shadow: var(--kh-shadow-md);
}

.login-card__header {
    margin-bottom: 24px;
}

.login-card__header h2 {
    margin: 0 0 8px;
    font-size: 1.85rem;
    letter-spacing: -0.03em;
    color: var(--kh-text);
}

.login-card__header p {
    margin: 0;
    color: var(--kh-muted);
    line-height: 1.6;
}

.login-alert {
    margin-bottom: 18px;
    padding: 14px 16px;
    border-radius: 14px;
    font-size: 0.94rem;
    line-height: 1.5;
}

.login-alert--error {
    border: 1px solid var(--kh-danger-border);
    background: var(--kh-danger-bg);
    color: var(--kh-danger-text);
}

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

.login-form__group {
    display: grid;
    gap: 8px;
}

.login-form__label {
    font-size: 0.92rem;
    font-weight: 700;
    color: #334155;
}

.login-form__input {
    width: 100%;
    padding: 15px 16px;
    border: 1px solid var(--kh-input-border);
    border-radius: var(--kh-radius-md);
    background: #ffffff;
    color: var(--kh-text);
    font-size: 1rem;
    outline: none;
    transition:
        border-color 0.2s ease,
        box-shadow 0.2s ease,
        transform 0.2s ease;
}

.login-form__input::placeholder {
    color: #94a3b8;
}

.login-form__input:focus {
    border-color: var(--kh-primary);
    box-shadow: 0 0 0 4px rgba(63, 163, 201, 0.16);
}

.login-form__submit {
    margin-top: 6px;
    padding: 16px 18px;
    border: 0;
    border-radius: var(--kh-radius-md);
    background: linear-gradient(135deg, var(--kh-primary) 0%, var(--kh-primary-dark) 100%);
    color: #ffffff;
    font-size: 1rem;
    font-weight: 800;
    cursor: pointer;
    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease,
        opacity 0.2s ease;
    box-shadow: 0 16px 30px rgba(63, 163, 201, 0.28);
}

.login-form__submit:hover {
    transform: translateY(-1px);
}

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

.login-card__footer {
    margin-top: 20px;
    text-align: center;
    color: var(--kh-muted);
    font-size: 0.86rem;
}

@media (max-width: 980px) {
    .login-shell {
        grid-template-columns: 1fr;
        max-width: 640px;
        min-height: auto;
    }

    .login-panel--brand {
        padding: 36px 28px 28px;
    }

    .login-panel--form {
        padding: 0 20px 28px;
        background: transparent;
    }

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

@media (max-width: 640px) {
    .login-page {
        padding: 14px;
    }

    .login-panel--brand {
        padding: 28px 20px 20px;
    }

    .login-panel--form {
        padding: 0 14px 20px;
    }

    .login-card {
        padding: 24px 18px;
        border-radius: 20px;
    }

    .login-brand__logo {
        width: min(100%, 208px);
        margin-top: 28px;
        padding-top: 0;
    }

    .login-brand__title {
        font-size: 1.8rem;
    }
}