/*******************************************************************************
    Login.css — VoiceMetrix UsagePortal
    DESIGN 5 — "Obsidian" premium login (branch design5)
    Theme-aware (data-bs-theme) glass card over an animated aurora backdrop.
    Standalone (Login.cshtml uses Layout = null) so tokens are self-contained.
*******************************************************************************/

:root,
[data-bs-theme="light"] {
    --d5-bg: #f5f6fa;
    --d5-surface: #ffffff;
    --d5-border: #dcdde5;
    --d5-text: #171a26;
    --d5-text-secondary: #4b4f63;
    --d5-text-muted: #73788c;
    --d5-primary: #3a66c2;
    --d5-primary-hover: #2f569e;
    --d5-ring: rgba(58, 102, 194, 0.25);
    --d5-glass-bg: rgba(255, 255, 255, 0.78);
    --d5-glass-border: rgba(255, 255, 255, 0.7);
    --d5-aurora-1: #6f97e6;
    --d5-aurora-2: #38bdf8;
    --d5-aurora-3: #c084fc;
    --d5-page: radial-gradient(140% 120% at 50% -10%, #eef0ff 0%, #f5f6fa 45%, #eef2ff 100%);

    /* Scale tokens — mirrors site.css so the login page can't drift from the
       app it fronts. Theme-invariant: the dark block never redefines these. */
    --d5-radius: 10px;
    --d5-radius-sm: 8px;
    --d5-radius-lg: 12px;
    --d5-danger: #be423c;
}

[data-bs-theme="dark"] {
    --d5-bg: #11131d;
    --d5-surface: #191c29;
    --d5-border: #2f3341;
    --d5-text: #ebedf4;
    --d5-text-secondary: #aeb2c2;
    --d5-text-muted: #7e8395;
    --d5-primary: #6398f0;
    --d5-primary-hover: #7eabf5;
    --d5-ring: rgba(99, 152, 240, 0.4);
    --d5-glass-bg: rgba(25, 28, 41, 0.66);
    --d5-glass-border: rgba(255, 255, 255, 0.08);
    --d5-aurora-1: #3a66c2;
    --d5-aurora-2: #0ea5e9;
    --d5-aurora-3: #7c3aed;
    --d5-page: radial-gradient(140% 120% at 50% -10%, #1c2033 0%, #11131d 55%, #0e1120 100%);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
    letter-spacing: -0.011em;
    color: var(--d5-text);
}

/* ----------------------------- Stage ----------------------------- */
.d5-login {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    overflow: hidden;
    background: var(--d5-page);
}

.d5-login-aurora { position: absolute; inset: 0; pointer-events: none; }
.d5-login-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.55;
    animation: d5-blob 16s ease-in-out infinite;
}
.d5-login-blob--1 { width: 460px; height: 460px; background: var(--d5-aurora-1); top: -140px; left: -120px; }
.d5-login-blob--2 { width: 420px; height: 420px; background: var(--d5-aurora-2); bottom: -160px; right: -120px; animation-delay: -5s; }
.d5-login-blob--3 { width: 320px; height: 320px; background: var(--d5-aurora-3); top: 50%; left: 60%; animation-delay: -9s; opacity: 0.4; }
@keyframes d5-blob {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -36px) scale(1.1); }
}
.d5-login-grid {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(var(--d5-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--d5-border) 1px, transparent 1px);
    background-size: 44px 44px;
    -webkit-mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 70%);
    mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 70%);
    opacity: 0.5;
}

/* ----------------------------- Theme toggle ----------------------------- */
.d5-login-theme {
    position: absolute; top: 22px; right: 22px; z-index: 5;
    width: 42px; height: 42px; border-radius: var(--d5-radius-sm);
    display: inline-flex; align-items: center; justify-content: center;
    background: var(--d5-glass-bg);
    -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
    border: 1px solid var(--d5-glass-border);
    color: var(--d5-text); cursor: pointer;
    transition: transform 0.15s ease;
}
.d5-login-theme:hover { transform: translateY(-2px); }
.d5-login-theme i { font-size: 1.15rem; }
.d5-theme-toggle .bi-sun-fill { display: none; }
.d5-theme-toggle .bi-moon-stars-fill { display: inline-block; }
[data-bs-theme="dark"] .d5-theme-toggle .bi-sun-fill { display: inline-block; }
[data-bs-theme="dark"] .d5-theme-toggle .bi-moon-stars-fill { display: none; }

/* ----------------------------- Card ----------------------------- */
.login-card {
    position: relative;
    z-index: 2;
    width: 430px;
    max-width: 100%;
    padding: 2.5rem 2.25rem;
    border-radius: var(--d5-radius-lg);
    background: var(--d5-glass-bg);
    -webkit-backdrop-filter: blur(20px) saturate(150%);
    backdrop-filter: blur(20px) saturate(150%);
    border: 1px solid var(--d5-glass-border);
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.28);
    animation: d5-rise 0.5s cubic-bezier(0.16, 1, 0.3, 1) both;
}
@keyframes d5-rise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

.login-logo { text-align: center; margin-bottom: 0.6rem; }
.login-logo img { width: 150px; height: auto; object-fit: contain; }
[data-bs-theme="dark"] .login-logo img { filter: brightness(0) invert(1); opacity: 0.96; }

.d5-login-wordmark {
    text-align: center;
    font-weight: 800;
    font-size: 1.35rem;
    letter-spacing: -0.03em;
    color: var(--d5-text);
    line-height: 1;
}
.d5-login-wordmark span { color: var(--d5-primary); }

.d5-login-badge {
    display: block;
    width: fit-content;
    margin: 0.6rem auto 1.5rem;
    padding: 0.25rem 0.8rem;
    border-radius: 999px;
    background: var(--d5-ring);
    color: var(--d5-primary);
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.login-card h2 {
    text-align: center;
    margin: 0 0 0.25rem;
    font-weight: 700;
    font-size: 1.4rem;
    letter-spacing: -0.02em;
    color: var(--d5-text);
}
.d5-login-sub {
    text-align: center;
    color: var(--d5-text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.6rem;
}

/* ----------------------------- Form ----------------------------- */
.form-label {
    font-weight: 600;
    font-size: 0.82rem;
    color: var(--d5-text-secondary);
    margin-bottom: 0.35rem;
}
.form-control {
    background: var(--d5-surface);
    border: 1px solid var(--d5-border);
    border-radius: var(--d5-radius-sm);
    padding: 0.7rem 0.9rem;
    color: var(--d5-text);
    font-size: 0.95rem;
}
.form-control::placeholder { color: var(--d5-text-muted); }
.form-control:focus {
    background: var(--d5-surface);
    border-color: var(--d5-primary);
    color: var(--d5-text);
    box-shadow: 0 0 0 4px var(--d5-ring);
}

.btn-primary {
    width: 100%;
    background: var(--d5-primary);
    border: none;
    padding: 0.75rem;
    border-radius: var(--d5-radius-sm);
    font-weight: 700;
    font-size: 0.98rem;
    letter-spacing: -0.01em;
    margin-top: 0.6rem;
    color: #fff;
    box-shadow: 0 12px 26px rgba(58, 102, 194, 0.3);
    transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn-primary:hover {
    background: var(--d5-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 16px 32px rgba(58, 102, 194, 0.38);
}
.btn-primary:active { transform: translateY(0); }
.btn-primary:focus { box-shadow: 0 0 0 4px var(--d5-ring); }

.show-password {
    cursor: pointer;
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    user-select: none;
}
.position-relative { position: relative; }
.text-danger { font-size: 0.85rem; }
.alert-danger {
    background: rgba(190, 66, 60, 0.12);
    border: 1px solid rgba(190, 66, 60, 0.25);
    color: var(--d5-danger);
    border-radius: var(--d5-radius-sm);
}