/* ==========================================================================
   DIAMOND PUBLIC SCHOOL, KHERLI (DPS KHERLI)
   Unified Premium Light Theme Login Engine
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400;0,9..144,600;0,9..144,700;1,9..144,500&family=Inter:wght@400;500;600;700&display=swap');

:root {
    --login-bg: #F8FAFC;
    --login-card-bg: #FFFFFF;
    --login-navy: #132342;
    --login-navy-hover: #1D3763;
    --login-gold: #B78A34;
    --login-gold-light: #E4C77E;
    --login-gold-pale: #F4E7C6;
    --login-green: #16A34A;
    --login-slate: #64748B;
    --login-dark: #0F172A;
    --login-line: #E2E8F0;
    --login-shadow: 0 20px 45px -15px rgba(19, 35, 66, 0.08), 0 4px 12px rgba(19, 35, 66, 0.03);
    --login-radius: 24px;
}

/* Base Body Styling */
body.login-page-bg {
    margin: 0;
    padding: 0;
    background-color: var(--login-bg);
    background-image: 
        radial-gradient(circle at 50% 0%, rgba(19, 35, 66, 0.04) 0%, transparent 60%),
        radial-gradient(circle at 85% 90%, rgba(22, 163, 74, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 15% 85%, rgba(183, 138, 52, 0.03) 0%, transparent 50%);
    color: var(--login-dark);
    font-family: 'Inter', -apple-system, sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    opacity: 1;
}

/* Fast 300ms Fade-In Page Wrapper */
.login-wrapper-inst {
    width: 100%;
    max-width: 460px;
    padding: 32px 16px;
    margin: 0 auto;
    animation: loginFastFadeIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes loginFastFadeIn {
    0% { opacity: 0; transform: translateY(8px); }
    100% { opacity: 1; transform: translateY(0); }
}

/* Centered Premium White Login Card */
.login-card-inst {
    background-color: var(--login-card-bg);
    border: 1px solid var(--login-line);
    border-radius: var(--login-radius);
    padding: 40px 36px;
    box-shadow: var(--login-shadow);
    transition: box-shadow 0.3s ease;
}

.login-card-inst:hover {
    box-shadow: 0 24px 50px -15px rgba(19, 35, 66, 0.12), 0 6px 16px rgba(19, 35, 66, 0.04);
}

/* Brand Lockup Header */
.login-brand-header {
    text-align: center;
    margin-bottom: 26px;
}

.login-brand-logo {
    height: 84px;
    max-height: 90px;
    width: auto;
    max-width: 110px;
    object-fit: contain;
    margin: 0 auto 12px auto;
    display: block;
    filter: drop-shadow(0 4px 8px rgba(19, 35, 66, 0.06));
}

.login-school-title {
    font-family: 'Fraunces', serif;
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--login-navy);
    margin: 0 0 2px 0;
    line-height: 1.25;
    letter-spacing: -0.01em;
}

.login-school-subtitle {
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--login-gold);
    text-transform: uppercase;
    margin-bottom: 22px;
    display: block;
}

.login-role-header {
    border-top: 1px solid var(--login-line);
    padding-top: 20px;
    margin-top: 18px;
    text-align: center;
}

.login-role-title {
    font-family: 'Fraunces', serif;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--login-navy);
    margin: 0 0 6px 0;
}

.login-role-desc {
    font-size: 13.5px;
    color: var(--login-slate);
    margin-bottom: 0;
    line-height: 1.5;
}

/* Form Controls & Styling */
.login-form-group {
    margin-bottom: 20px;
    text-align: left;
}

.login-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--login-navy);
    margin-bottom: 6px;
}

.login-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.login-input {
    width: 100%;
    height: 48px;
    padding: 12px 16px;
    font-family: 'Inter', sans-serif;
    font-size: 14.5px;
    font-weight: 500;
    color: var(--login-dark);
    background-color: #FAF7EF;
    border: 1.5px solid var(--login-line);
    border-radius: 12px;
    transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.login-input-wrap .login-input {
    padding-right: 46px;
}

.login-input:focus {
    outline: none;
    background-color: #FFFFFF;
    border-color: var(--login-gold);
    box-shadow: 0 0 0 3.5px rgba(183, 138, 52, 0.15);
}

.password-toggle-btn {
    position: absolute;
    right: 12px;
    background: none;
    border: none;
    color: var(--login-slate);
    cursor: pointer;
    padding: 6px 8px;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s ease;
    border-radius: 6px;
}

.password-toggle-btn:hover {
    color: var(--login-navy);
}

/* Remember Device & Forgot Password Row */
.login-utility-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    font-size: 13px;
    gap: 12px;
    flex-wrap: wrap;
}

.login-remember-label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--login-slate);
    font-weight: 500;
    cursor: pointer;
    user-select: none;
    margin-bottom: 0;
}

.login-remember-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--login-navy);
    border-radius: 4px;
    cursor: pointer;
}

.login-forgot-link {
    color: var(--login-navy);
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* Full Width Submit Button */
.btn-login-submit {
    width: 100%;
    height: 50px;
    padding: 12px 24px;
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    font-weight: 700;
    color: #FFFFFF;
    background: linear-gradient(135deg, var(--login-navy) 0%, var(--login-navy-hover) 100%);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 8px 20px -6px rgba(19, 35, 66, 0.35);
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.btn-login-submit:hover {
    transform: translateY(-2px);
    background: linear-gradient(135deg, var(--login-navy-hover) 0%, var(--login-navy) 100%);
    box-shadow: 0 12px 24px -6px rgba(19, 35, 66, 0.45);
    color: #FFFFFF;
}

.btn-login-submit:active {
    transform: translateY(0);
}

.btn-login-submit:disabled {
    opacity: 0.75;
    cursor: not-allowed;
    transform: none;
}

/* Back Link */
.login-footer-links {
    margin-top: 28px;
    text-align: center;
    font-size: 13.5px;
}

.login-footer-links a {
    color: var(--login-slate);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: color 0.2s ease;
}

.login-footer-links a:hover {
    color: var(--login-navy);
}

/* Alert Styling */
.alert-login-danger {
    background-color: #FEF2F2;
    border: 1.5px solid #FCA5A5;
    color: #991B1B;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 13.5px;
    font-weight: 500;
    margin-bottom: 22px;
    display: flex;
    align-items: center;
    gap: 10px;
    text-align: left;
}

/* Light Theme Modal Styling for Recovery */
.modal-content.login-modal-light {
    border-radius: 20px;
    border: 1px solid var(--login-line);
    background: #FFFFFF !important;
    color: var(--login-dark);
    box-shadow: 0 24px 50px -15px rgba(19, 35, 66, 0.2);
}

.modal-content.login-modal-light .modal-header {
    border-bottom: 1px solid var(--login-line);
    padding: 20px 24px;
}

.modal-content.login-modal-light .modal-title {
    color: var(--login-navy);
    font-family: 'Fraunces', serif;
    font-weight: 700;
}

.modal-content.login-modal-light .modal-body {
    padding: 24px;
    color: var(--login-slate);
}

.modal-content.login-modal-light .modal-footer {
    border-top: 1px solid var(--login-line);
    padding: 16px 24px;
}

/* Responsive Rules */
@media (max-width: 576px) {
    .login-wrapper-inst {
        padding: 16px 12px;
        width: calc(100% - 24px);
    }
    
    .login-card-inst {
        padding: 28px 22px;
        border-radius: 20px;
    }
    
    .login-brand-logo {
        height: 72px;
    }
    
    .login-school-title {
        font-size: 1.3rem;
    }
    
    .login-utility-row {
        flex-direction: row;
        justify-content: space-between;
    }
}