* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg: #121212;
    --surface: #1e1e1e;
    --orange: #f97316;
    --orange-hover: #ea580c;
    --white: #ffffff;
    --gray: #a1a1a1;
    --error: #f87171;

    --radius: 10px;
}

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

body {
    min-height: 100vh;
    background: var(--bg);
    color: var(--white);

    font-family:
        Inter,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        sans-serif;
}

button,
input {
    font: inherit;
}

/* =========================
   Page
   ========================= */

.login-page {
    width: 100%;
    min-height: 100vh;

    display: flex;
    align-items: center;
    justify-content: center;

    padding: 24px;
}

/* =========================
   Card
   ========================= */

.login-card {
    width: 100%;
    max-width: 358px;

    display: flex;
    flex-direction: column;
    align-items: center;
}

/* =========================
   Logo
   ========================= */

.logo {
    width: 80px;
    height: 80px;

    display: flex;
    align-items: center;
    justify-content: center;

    margin-bottom: 24px;

    border-radius: 20px;

    background: var(--orange);

    color: var(--white);

    font-size: 44px;
    font-weight: 700;
    line-height: 1;
}

/* =========================
   Typography
   ========================= */

h1 {
    color: var(--white);

    font-size: 22px;
    font-weight: 700;
    line-height: 1.2;

    text-align: center;
}

.subtitle {
    margin-top: 8px;

    color: var(--gray);

    font-size: 13px;
    font-weight: 400;
    line-height: 1.4;

    text-align: center;
}

/* =========================
   Form
   ========================= */

.login-form {
    width: 100%;
    margin-top: 42px;
}

.field {
    width: 100%;
}

.field + .field {
    margin-top: 18px;
}

.field label {
    display: block;

    margin-bottom: 8px;

    color: var(--gray);

    font-size: 12px;
    font-weight: 400;
    line-height: 1.2;
}

.field input {
    width: 100%;
    height: 48px;

    padding: 0 16px;

    border: 1px solid transparent;
    border-radius: var(--radius);

    outline: none;

    background: var(--surface);
    color: var(--white);

    font-size: 15px;

    transition:
        border-color 0.15s ease,
        box-shadow 0.15s ease;
}

.field input::placeholder {
    color: #666;
}

.field input:focus {
    border-color: var(--orange);

    box-shadow: 0 0 0 2px rgba(249, 115, 22, 0.12);
}

/* =========================
   Error
   ========================= */

.login-error {
    min-height: 20px;

    margin-top: 12px;

    color: var(--error);

    font-size: 13px;
    line-height: 1.4;

    text-align: center;
}

.login-error:empty {
    display: none;
}

/* =========================
   Button
   ========================= */

.login-button {
    position: relative;

    width: 100%;
    height: 52px;

    margin-top: 4px;

    border: none;
    border-radius: 12px;

    background: var(--orange);
    color: var(--bg);

    font-size: 16px;
    font-weight: 700;

    cursor: pointer;

    transition:
        background 0.15s ease,
        transform 0.1s ease,
        opacity 0.15s ease;
}

.login-button:hover {
    background: var(--orange-hover);
}

.login-button:active {
    transform: translateY(1px);
}

.login-button:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

/* =========================
   Spinner
   ========================= */

.spinner {
    display: none;

    width: 18px;
    height: 18px;

    margin-left: 8px;

    vertical-align: middle;

    border: 2px solid rgba(18, 18, 18, 0.25);
    border-top-color: var(--bg);

    border-radius: 50%;

    animation: spin 0.7s linear infinite;
}

.login-button.loading #login-button-text {
    opacity: 0.7;
}

.login-button.loading .spinner {
    display: inline-block;
}

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

/* =========================
   Hint
   ========================= */

.users-hint {
    margin-top: 18px;

    color: var(--gray);

    font-size: 12px;
    font-weight: 400;

    text-align: center;
}

@media (min-width: 768px) {
    .login-card {
        max-width: 420px;
        padding: 36px;
        border: 1px solid rgba(255, 255, 255, 0.06);
        border-radius: 18px;
        background: #1c1c1c;
    }

    .login-form {
        margin-top: 32px;
    }
}

/* =========================
   Mobile
   ========================= */

@media (max-width: 480px) {
    .login-page {
        padding: 20px;
    }

    .login-card {
        max-width: 358px;
    }

    .logo {
        width: 80px;
        height: 80px;
    }

    .login-form {
        margin-top: 38px;
    }
}

/* =========================
   Reduced motion
   ========================= */

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