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

:root {
    --bg:          #f4f5f7;
    --surface:     #ffffff;
    --border:      #d8dae0;
    --border-focus:#6b7280;
    --text:        #111214;
    --muted:       #6b7280;
    --accent:      #374151;
    --btn-bg:      #1a3a6b;
    --btn-hover:   #142e56;
    --btn-text:    #ffffff;
    --error:       #dc2626;
}

body {
    min-height: 100vh;
    background: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'DM Sans', sans-serif;
    color: var(--text);
}

/* subtle grid texture */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 48px 48px;
    opacity: 0.5;
    pointer-events: none;
}

.mb-16 {
    margin-bottom: 16px;
}

.card {
    position: relative;
    width: min(420px, 92vw);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 44px 40px 40px;
    animation: rise 0.5s cubic-bezier(0.22, 1, 0.36, 1) both;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.07);
}

@keyframes rise {
    from { opacity: 0; transform: translateY(18px); }
    to   { opacity: 1; transform: translateY(0); }
}

.logo-wrap {
    display: flex;
    justify-content: center;
    margin-bottom: 28px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.logo-wrap img {
    height: 80px;
    width: auto;
}

h1 {
    font-size: 1.35rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    color: var(--text);
    margin-bottom: 6px;
}

.subtitle {
    font-size: 0.875rem;
    color: var(--muted);
    margin-bottom: 32px;
}

.field {
    margin-bottom: 16px;
}

label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--muted);
    letter-spacing: 0.03em;
    text-transform: uppercase;
    margin-bottom: 7px;
    transition: color 0.2s;
}

.field:focus-within label { color: var(--accent); }

.input-wrap {
    position: relative;
}

input {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 11px 38px 11px 14px;
    font-family: 'DM Mono', monospace;
    font-size: 0.875rem;
    color: var(--text);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input::placeholder { color: var(--muted); opacity: 0.6; }

input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(26, 58, 107, 0.08);
}

.toggle-pw {
    position: absolute;
    right: 11px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--muted);
    display: flex;
    align-items: center;
    padding: 4px;
    transition: color 0.2s;
}
.toggle-pw:hover { color: var(--accent); }

.row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    margin-top: 4px;
}

.btn {
    width: 100%;
    padding: 12px;
    background: var(--btn-bg);
    color: var(--btn-text);
    border: none;
    border-radius: 8px;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.15s;
    letter-spacing: 0.01em;
    position: relative;
    overflow: hidden;
}

.btn:hover { opacity: 0.88; }
.btn:active { transform: scale(0.985); }


.divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 20px 0;
    color: var(--muted);
    font-size: 0.78rem;
}
.divider::before, .divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

.signup {
    text-align: center;
    font-size: 0.82rem;
    color: var(--muted);
}
.signup a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
}
.signup a:hover { text-decoration: underline; }