/* =============================================
   Login Page — Elegant Centered Card
   ============================================= */

:root {
    --lp-bg:              linear-gradient(145deg, #0f172a 0%, #1e3a8a 55%, #312e81 100%);
    --lp-orb-1:           rgba(99, 102, 241, 0.28);
    --lp-orb-2:           rgba(59, 130, 246, 0.18);
    --lp-card-bg:         #ffffff;
    --lp-card-shadow:     0 40px 100px rgba(0,0,0,0.25), 0 0 0 1px rgba(255,255,255,0.06);
    --lp-logo-bg:         #f8fafc;
    --lp-logo-shadow:     0 4px 24px rgba(0,0,0,0.10);
    --lp-school-name:     #111827;
    --lp-tagline:         #6b7280;
    --lp-accent:          #4f46e5;
    --lp-accent-hover:    #4338ca;
    --lp-accent-text:     #ffffff;
    --lp-accent-ring:     rgba(79, 70, 229, 0.18);
    --lp-label:           #374151;
    --lp-input-bg:        #f9fafb;
    --lp-input-border:    #e5e7eb;
    --lp-input-focus:     #4f46e5;
    --lp-input-shadow:    0 0 0 3px rgba(79, 70, 229, 0.12);
    --lp-muted:           #9ca3af;
    --lp-divider:         #f0f0f0;
    --lp-link:            #4f46e5;
    --lp-footer:          #9ca3af;
}

/* ─── Reset ────────────────────────────────── */

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

/* ─── Page background ──────────────────────── */

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--lp-bg);
    padding: 2.5rem 1.25rem;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    position: relative;
    overflow: hidden;
}

.login-page::before {
    content: '';
    position: absolute;
    width: 640px;
    height: 640px;
    border-radius: 50%;
    background: var(--lp-orb-1);
    top: -220px;
    right: -120px;
    filter: blur(90px);
    pointer-events: none;
}

.login-page::after {
    content: '';
    position: absolute;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: var(--lp-orb-2);
    bottom: -120px;
    left: -80px;
    filter: blur(70px);
    pointer-events: none;
}

/* ─── Card ─────────────────────────────────── */

.login-card {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 430px;
    background: var(--lp-card-bg);
    border-radius: 28px;
    box-shadow: var(--lp-card-shadow);
    padding: 2.75rem 2.25rem 2.25rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* ─── Logo ─────────────────────────────────── */

.login-logo-wrap {
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0;
    flex-shrink: 0;
}

.login-logo {
    width: 108px;
    height: 108px;
    object-fit: contain;
}

.login-logo-placeholder {
    font-size: 3rem;
    font-weight: 800;
    color: var(--lp-accent);
    line-height: 1;
}

/* ─── School branding ──────────────────────── */

.login-school-name {
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--lp-school-name);
    letter-spacing: -0.025em;
    text-align: center;
    margin: 0 0 0.15rem;
    line-height: 1.2;
}

.login-school-subtitle {
    font-size: 0.72rem;
    font-weight: 400;
    font-style: italic;
    color: var(--lp-tagline);
    letter-spacing: 0.06em;
    text-align: center;
    margin: 0 0 0.35rem;
}

.login-tagline {
    font-size: 0.825rem;
    color: var(--lp-tagline);
    text-align: center;
    margin: 0 0 1.75rem;
    line-height: 1.45;
    max-width: 280px;
}

.login-brand-rule {
    width: 36px;
    height: 3px;
    border-radius: 3px;
    background: var(--lp-accent);
    opacity: 0.35;
    margin-bottom: 1.75rem;
}

/* ─── Validation / Status ──────────────────── */

.login-validation-summary {
    width: 100%;
    background: #fff1f1;
    border: 1px solid #fecaca;
    border-radius: 10px;
    padding: 0.65rem 0.9rem;
    color: #dc2626;
    font-size: 0.8rem;
    margin-bottom: 1rem;
}

.login-validation-summary ul { margin: 0; padding-left: 1.2rem; }

/* ─── Form ─────────────────────────────────── */

.login-form { width: 100%; }

.login-field { margin-bottom: 1rem; }

.login-field-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.4rem;
}

.login-field label,
.login-field-header label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--lp-label);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 0.4rem;
}

.login-field-header label { margin-bottom: 0; }

.forgot-link {
    font-size: 0.75rem;
    color: var(--lp-link);
    text-decoration: none;
    font-weight: 500;
}
.forgot-link:hover { text-decoration: underline; }

.login-input {
    width: 100%;
    padding: 0.7rem 0.95rem;
    border: 1.5px solid var(--lp-input-border);
    border-radius: 11px;
    background: var(--lp-input-bg);
    font-size: 0.9375rem;
    color: #111827;
    outline: none;
    display: block;
    transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}
.login-input::placeholder { color: #c9cbd0; }
.login-input:focus {
    border-color: var(--lp-input-focus);
    background: #fff;
    box-shadow: var(--lp-input-shadow);
}

.login-field-error {
    display: block;
    color: #ef4444;
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

/* ─── Remember me ──────────────────────────── */

.login-remember {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.remember-label {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.8rem;
    color: var(--lp-tagline);
    cursor: pointer;
    user-select: none;
}

.remember-checkbox {
    width: 15px;
    height: 15px;
    accent-color: var(--lp-accent);
    cursor: pointer;
    flex-shrink: 0;
}

/* ─── Sign In button ───────────────────────── */

.btn-signin {
    width: 100%;
    padding: 0.82rem;
    border: none;
    border-radius: 11px;
    background: var(--lp-accent);
    color: var(--lp-accent-text);
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    cursor: pointer;
    transition: background 0.15s, transform 0.1s, box-shadow 0.15s;
    margin-bottom: 1.5rem;
}
.btn-signin:hover {
    background: var(--lp-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--lp-accent-ring);
}
.btn-signin:active { transform: translateY(0); }

/* ─── Social divider ───────────────────────── */

.social-divider {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    margin-bottom: 1.1rem;
}
.social-divider::before,
.social-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--lp-divider);
}
.social-divider span {
    font-size: 0.72rem;
    color: var(--lp-muted);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    white-space: nowrap;
}

/* ─── Social icon buttons ──────────────────── */

.social-row {
    display: flex;
    justify-content: center;
    gap: 0.7rem;
    width: 100%;
    margin-bottom: 1.75rem;
}

.social-btn {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 1.5px solid #e5e7eb;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s, background 0.15s;
    flex-shrink: 0;
    padding: 0;
}
.social-btn svg { width: 20px; height: 20px; }

.social-btn:not(:disabled):hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(0,0,0,0.09);
}

.social-btn.google:not(:disabled):hover   { border-color: #4285F4; background: #f0f6ff; }
.social-btn.apple:not(:disabled):hover    { border-color: #1c1c1e; background: #f5f5f5; }
.social-btn.facebook:not(:disabled):hover { border-color: #1877F2; background: #f0f6ff; }
.social-btn.linkedin:not(:disabled):hover { border-color: #0A66C2; background: #f0f6ff; }
.social-btn.twitter:not(:disabled):hover  { border-color: #000000; background: #f5f5f5; }

.social-btn:disabled {
    opacity: 0.28;
    cursor: not-allowed;
    filter: grayscale(1);
}

/* ─── Footer ───────────────────────────────── */

.login-footer {
    text-align: center;
    width: 100%;
}

.login-footer p {
    font-size: 0.8rem;
    color: var(--lp-footer);
    margin: 0.3rem 0;
}

.login-footer a {
    color: var(--lp-link);
    font-weight: 500;
    text-decoration: none;
}
.login-footer a:hover { text-decoration: underline; }

/* ─── Mobile ───────────────────────────────── */

@media (max-width: 480px) {
    .login-page { padding: 1.5rem 1rem; align-items: flex-start; padding-top: 3rem; }

    .login-card {
        border-radius: 22px;
        padding: 2.25rem 1.5rem 1.75rem;
        max-width: 100%;
    }

    .login-logo-wrap {
        width: 100px;
        height: 100px;
        border-radius: 22px;
    }

    .login-logo {
        width: 90px;
        height: 90px;
    }

    .login-school-name { font-size: 1.25rem; }
}