/* ===== Reset ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #eef2ef;
    --white: #ffffff;
    --text-primary: #17251d;
    --text-secondary: #526057;
    --text-muted: #7b8a80;
    --border: #dbe3dd;
    --blue: #256b4f;
    --blue-hover: #1d563f;
    --blue-light: rgba(37, 107, 79, 0.08);
    --gold: #f4c542;
    --danger: #e53935;
    --danger-bg: #fdecea;
    --font: 'Inter', system-ui, -apple-system, sans-serif;
    --radius: 8px;
    --transition: 0.2s ease;
}

html {
    font-size: 16px;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    -webkit-font-smoothing: antialiased;
    padding: 2rem 1rem;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #10291f, var(--gold), var(--blue));
}

/* ===== Wrapper ===== */
.login-wrapper {
    width: 100%;
    max-width: 440px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
}

/* ===== Branding ===== */
.brand {
    text-align: center;
    margin-bottom: 0.25rem;
}

.brand-icon {
    width: 64px;
    height: 52px;
    background: linear-gradient(135deg, var(--gold), #d4a625);
    color: #fff;
    font-size: 0.95rem;
    font-weight: 800;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.75rem;
    box-shadow: 0 2px 10px rgba(16, 41, 31, 0.18);
}

.brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    margin-bottom: 0.15rem;
}

.brand-tagline {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 400;
}

/* ===== Card ===== */
.login-card {
    width: 100%;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem 1.75rem;
    box-shadow: 0 14px 35px rgba(16, 41, 31, 0.1);
}

.card-header {
    margin-bottom: 1.5rem;
}

.card-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.card-header p {
    font-size: 0.825rem;
    color: var(--blue);
    font-weight: 400;
}

/* ===== Flash messages ===== */
.flash-messages {
    margin-bottom: 1rem;
}

.flash {
    font-size: 0.825rem;
    padding: 0.65rem 0.85rem;
    border-radius: 6px;
    margin-bottom: 0.5rem;
}

.flash-error {
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid rgba(229, 57, 53, 0.2);
}

/* ===== Form ===== */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.825rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
}

input[type="email"],
input[type="password"],
input[type="text"] {
    width: 100%;
    padding: 0.65rem 0.85rem;
    font-family: var(--font);
    font-size: 0.875rem;
    color: var(--text-primary);
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 6px;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

input:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 3px var(--blue-light);
}

input::placeholder {
    color: #b0b0b0;
}

/* Password wrapper */
.password-wrapper {
    position: relative;
}

.password-wrapper input {
    padding-right: 2.75rem;
}

.toggle-password {
    position: absolute;
    right: 0.7rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    padding: 0.2rem;
    transition: color var(--transition);
}

.toggle-password:hover {
    color: var(--text-primary);
}

/* Forgot password */
.forgot-link {
    display: inline-block;
    font-size: 0.8rem;
    color: var(--blue);
    text-decoration: none;
    margin-bottom: 1.25rem;
    font-weight: 500;
    transition: color var(--transition);
}

.forgot-link:hover {
    color: var(--blue-hover);
    text-decoration: underline;
}

/* Sign In Button */
.btn-signin {
    display: block;
    width: 100%;
    padding: 0.7rem;
    font-family: var(--font);
    font-size: 0.9rem;
    font-weight: 600;
    color: #fff;
    background: var(--blue);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background var(--transition), box-shadow var(--transition);
}

.btn-signin.is-loading {
    cursor: wait;
    opacity: 0.86;
}

.signin-spinner {
    display: none;
    width: 14px;
    height: 14px;
    margin-right: 0.45rem;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: #fff;
    border-radius: 50%;
    animation: loginSpin 0.75s linear infinite;
    vertical-align: -2px;
}

.btn-signin.is-loading .signin-spinner {
    display: inline-block;
}

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

.btn-signin:hover {
    background: var(--blue-hover);
    box-shadow: 0 2px 8px rgba(66, 133, 244, 0.3);
}

.btn-signin:active {
    transform: scale(0.995);
}

/* ===== Demo box ===== */
.demo-box {
    width: 100%;
    background: var(--blue-light);
    border: 1px solid rgba(66, 133, 244, 0.15);
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
}

.demo-title {
    font-size: 0.8rem;
    color: var(--blue);
    font-weight: 500;
    margin-bottom: 0.35rem;
}

.demo-line {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.6;
    font-family: 'Courier New', Courier, monospace;
    font-weight: 500;
}

.demo-highlight {
    color: var(--blue);
}

/* ===== Responsive ===== */
@media (max-width: 480px) {
    .login-card {
        padding: 1.5rem 1.25rem;
    }

    .brand-icon {
        width: 44px;
        height: 44px;
        font-size: 1.25rem;
    }
}