/* ========================================
   Login Page Styles - Modern & Responsive
   Uses Bootstrap as base, custom styles only when needed
   Enhanced for all resolutions and browser compatibility
   ======================================== */

/* Browser Compatibility Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    font-size: 16px;
}

body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background: #F0F9FF;
    background: linear-gradient(135deg, #F0F9FF 0%, #E0F2FE 50%, #F0F9FF 100%);
    background-attachment: fixed;
    min-height: 100vh;
    min-height: -webkit-fill-available; /* iOS Safari fix */
    overflow-x: hidden;
    position: relative;
}

/* Fallback for browsers that don't support linear-gradient */
@supports not (background: linear-gradient(135deg, #F0F9FF 0%, #E0F2FE 50%, #F0F9FF 100%)) {
    body {
        background: #F0F9FF;
    }
}

/* Main Container - Enhanced for all screen sizes */
main.min-vh-100 {
    min-height: 100vh;
    min-height: -webkit-fill-available; /* iOS Safari fix */
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    padding: 0.75rem;
    width: 100%;
    position: relative;
}

main.min-vh-100.py-2 {
    padding-top: 0.5rem !important;
    padding-bottom: 0.5rem !important;
}

/* Container improvements */
.container {
    width: 100%;
    max-width: 100%;
    padding-left: 15px;
    padding-right: 15px;
    margin-left: auto;
    margin-right: auto;
}

/* Row improvements */
.row {
    margin-left: -15px;
    margin-right: -15px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
}

.row > * {
    padding-left: 15px;
    padding-right: 15px;
}

.login-wrapper {
    width: 100%;
    max-width: 100%;
    position: relative;
}

.login-card {
    background: #FFFFFF;
    border: none;
    border-radius: 24px;
    -webkit-border-radius: 24px;
    -moz-border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12), 0 8px 25px rgba(0, 0, 0, 0.08);
    -webkit-box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12), 0 8px 25px rgba(0, 0, 0, 0.08);
    -moz-box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12), 0 8px 25px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    -webkit-animation: fadeInUp 0.6s ease-out;
    animation: fadeInUp 0.6s ease-out;
    -webkit-transition: -webkit-transform 0.3s ease, box-shadow 0.3s ease;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    width: 100%;
    max-width: 100%;
}

.login-card.mb-4 {
    margin-bottom: 0.75rem !important;
}

.login-card:hover {
    -webkit-transform: translateY(-4px);
    transform: translateY(-4px);
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.15), 0 10px 30px rgba(0, 0, 0, 0.1);
    -webkit-box-shadow: 0 25px 70px rgba(0, 0, 0, 0.15), 0 10px 30px rgba(0, 0, 0, 0.1);
    -moz-box-shadow: 0 25px 70px rgba(0, 0, 0, 0.15), 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* Animations with browser prefixes */
@-webkit-keyframes fadeInUp {
    from {
        opacity: 0;
        -webkit-transform: translateY(30px);
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        -webkit-transform: translateY(30px);
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
}

.login-header {
    background: #0891B2;
    background: -webkit-linear-gradient(135deg, #0891B2 0%, #0E7490 100%);
    background: linear-gradient(135deg, #0891B2 0%, #0E7490 100%);
    padding: 1.25rem 1.5rem;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
    width: 100%;
}

/* Fallback for browsers that don't support linear-gradient */
@supports not (background: linear-gradient(135deg, #0891B2 0%, #0E7490 100%)) {
    .login-header {
        background: #0891B2;
    }
}

.login-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: pulse 3s ease-in-out infinite;
}

@-webkit-keyframes pulse {
    0%, 100% {
        -webkit-transform: scale(1);
        transform: scale(1);
        opacity: 0.5;
    }
    50% {
        -webkit-transform: scale(1.1);
        transform: scale(1.1);
        opacity: 0.3;
    }
}

@keyframes pulse {
    0%, 100% {
        -webkit-transform: scale(1);
        transform: scale(1);
        opacity: 0.5;
    }
    50% {
        -webkit-transform: scale(1.1);
        transform: scale(1.1);
        opacity: 0.3;
    }
}

.login-header i {
    font-size: 3rem;
    margin-bottom: 0.75rem;
    display: block;
    position: relative;
    z-index: 1;
    -webkit-animation: iconFloat 3s ease-in-out infinite;
    animation: iconFloat 3s ease-in-out infinite;
}

@-webkit-keyframes iconFloat {
    0%, 100% {
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
    50% {
        -webkit-transform: translateY(-10px);
        transform: translateY(-10px);
    }
}

@keyframes iconFloat {
    0%, 100% {
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
    50% {
        -webkit-transform: translateY(-10px);
        transform: translateY(-10px);
    }
}

.login-header h4 {
    font-size: 1.4rem;
    font-weight: 700;
    margin: 0;
    position: relative;
    z-index: 1;
    letter-spacing: -0.5px;
}

.login-header p {
    font-size: 0.9rem;
    opacity: 0.95;
    margin: 0.5rem 0 0 0;
    position: relative;
    z-index: 1;
    font-weight: 300;
}

.login-card .card-body {
    padding: 1.25rem 1.25rem;
}

.login-card .form-label {
    font-weight: 600;
    color: #0F172A;
    margin-bottom: 0.35rem;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
}

.login-card .form-control {
    border: 2px solid #E2E8F0;
    border-radius: 12px;
    -webkit-border-radius: 12px;
    -moz-border-radius: 12px;
    padding: 0.7rem 1.1rem;
    font-size: 0.95rem;
    -webkit-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: #FAFBFC;
    width: 100%;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

.login-card .form-control:focus {
    border-color: #0891B2;
    box-shadow: 0 0 0 4px rgba(8, 145, 178, 0.1);
    -webkit-box-shadow: 0 0 0 4px rgba(8, 145, 178, 0.1);
    -moz-box-shadow: 0 0 0 4px rgba(8, 145, 178, 0.1);
    outline: none;
    background: #FFFFFF;
    -webkit-transform: translateY(-1px);
    transform: translateY(-1px);
}

.login-card .form-control::placeholder {
    color: #94A3B8;
    font-weight: 400;
}

.login-card .input-group {
    position: relative;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: nowrap;
    flex-wrap: nowrap;
    width: 100%;
}

.login-card .input-group .form-control {
    border-right: none;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    padding-right: 0.75rem;
    -ms-flex: 1 1 auto;
    flex: 1 1 auto;
    min-width: 0;
}

.login-card .input-group .btn {
    border-left: none;
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    border-color: #E2E8F0;
    color: #64748B;
    background: #FAFBFC;
    padding: 0.7rem 0.9rem;
    -webkit-transition: all 0.3s ease;
    transition: all 0.3s ease;
    white-space: nowrap;
    display: -webkit-inline-box;
    display: -ms-inline-flexbox;
    display: inline-flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    min-width: 48px;
    -ms-flex-negative: 0;
    flex-shrink: 0;
    -ms-flex-positive: 0;
    flex-grow: 0;
    width: auto;
}

.login-card .input-group .btn i {
    display: inline-block !important;
    line-height: 1 !important;
    vertical-align: middle;
    white-space: nowrap !important;
    -ms-flex-negative: 0;
    flex-shrink: 0 !important;
    font-size: 1rem;
    width: auto;
    height: auto;
}

.login-card .input-group .btn:hover {
    background: #F1F5F9;
    border-color: #E2E8F0;
    color: #0891B2;
}

.login-card .input-group .btn:focus {
    box-shadow: none;
    border-color: #0891B2;
    outline: none;
}

.btn-login {
    background: #0891B2;
    background: -webkit-linear-gradient(135deg, #0891B2 0%, #0E7490 100%);
    background: linear-gradient(135deg, #0891B2 0%, #0E7490 100%);
    border: none;
    border-radius: 12px;
    -webkit-border-radius: 12px;
    -moz-border-radius: 12px;
    font-weight: 600;
    padding: 0.7rem 1.25rem;
    font-size: 0.95rem;
    -webkit-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    width: 100%;
    color: white;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

/* Fallback for browsers that don't support linear-gradient */
@supports not (background: linear-gradient(135deg, #0891B2 0%, #0E7490 100%)) {
    .btn-login {
        background: #0891B2;
    }
}

.login-card form.row {
    --bs-gutter-y: 0.75rem;
}

.login-card form .col-12.mt-3 {
    margin-top: 0.5rem !important;
}

.btn-login::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-login:hover::before {
    left: 100%;
}

.btn-login:hover {
    background: #0E7490;
    background: -webkit-linear-gradient(135deg, #0E7490 0%, #0891B2 100%);
    background: linear-gradient(135deg, #0E7490 0%, #0891B2 100%);
    -webkit-transform: translateY(-2px);
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(8, 145, 178, 0.4);
    -webkit-box-shadow: 0 12px 30px rgba(8, 145, 178, 0.4);
    -moz-box-shadow: 0 12px 30px rgba(8, 145, 178, 0.4);
    color: white;
}

.btn-login:active {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    box-shadow: 0 6px 20px rgba(8, 145, 178, 0.3);
    -webkit-box-shadow: 0 6px 20px rgba(8, 145, 178, 0.3);
    -moz-box-shadow: 0 6px 20px rgba(8, 145, 178, 0.3);
}

.login-card .form-check {
    padding-left: 0;
}

.login-card .form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    margin-top: 0.25rem;
    margin-right: 0.75rem;
    border: 2px solid #CBD5E1;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.login-card .form-check-input:checked {
    background-color: #0891B2;
    border-color: #0891B2;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3e%3cpath fill='none' stroke='%23fff' stroke-linecap='round' stroke-linejoin='round' stroke-width='3' d='M6 10l3 3l6-6'/%3e%3c/svg%3e");
}

.login-card .form-check-input:focus {
    border-color: #0891B2;
    box-shadow: 0 0 0 4px rgba(8, 145, 178, 0.1);
}

.login-card .form-check-label {
    color: #475569;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    user-select: none;
}

.forgot-password-link {
    display: block;
    text-align: center;
    margin-top: 0.5rem;
    color: #0891B2;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    position: relative;
}

.forgot-password-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: #0891B2;
    transition: width 0.3s ease;
}

.forgot-password-link:hover {
    color: #0E7490;
    text-decoration: none;
}

.forgot-password-link:hover::after {
    width: 100%;
}

.portal-link {
    text-align: center;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid #E2E8F0;
}

.portal-link a {
    color: #64748B;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.portal-link a:hover {
    color: #0891B2;
    transform: translateX(-3px);
}

.info-note,
.security-note {
    text-align: center;
    margin-top: 0.75rem;
    font-size: 0.875rem;
    color: #94A3B8;
    line-height: 1.6;
}

/* ========================================
   Responsive Design - All Screen Sizes
   ======================================== */

/* Ultra-wide screens (2560px and above) */
@media (min-width: 2560px) {
    .container {
        max-width: 1400px;
    }
    
    .login-card {
        max-width: 600px;
        margin: 0 auto;
    }
    
    .login-header {
        padding: 2rem 2.5rem;
    }
    
    .login-header h4 {
        font-size: 1.75rem;
    }
    
    .login-card .card-body {
        padding: 2rem 2.5rem;
    }
}

/* Large desktop screens (1920px - 2559px) */
@media (min-width: 1920px) and (max-width: 2559px) {
    .container {
        max-width: 1200px;
    }
    
    .login-card {
        max-width: 550px;
        margin: 0 auto;
    }
}

/* Standard desktop screens (1440px - 1919px) */
@media (min-width: 1440px) and (max-width: 1919px) {
    .container {
        max-width: 1140px;
    }
}

/* Laptop screens (1024px - 1439px) */
@media (min-width: 1024px) and (max-width: 1439px) {
    .container {
        max-width: 960px;
    }
}

/* Tablet landscape (768px - 1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
    .container {
        max-width: 720px;
    }
    
    .login-header {
        padding: 1.5rem 1.75rem;
    }
    
    .login-header i {
        font-size: 2.75rem;
    }
    
    .login-header h4 {
        font-size: 1.5rem;
    }
    
    .login-card .card-body {
        padding: 1.75rem 1.5rem;
    }
}

/* Tablet portrait and small tablets (576px - 767px) */
@media (min-width: 576px) and (max-width: 767px) {
    .container {
        max-width: 540px;
    }
    
    main.min-vh-100 {
        padding: 1rem;
    }
    
    .login-header {
        padding: 1.5rem 1.5rem;
    }
    
    .login-header i {
        font-size: 2.5rem;
    }
    
    .login-header h4 {
        font-size: 1.4rem;
    }
    
    .login-card {
        border-radius: 20px;
    }
    
    .login-card .card-body {
        padding: 1.5rem;
    }
    
    .btn-login {
        padding: 0.8rem 1.25rem;
        font-size: 0.95rem;
    }
}

/* Mobile devices (up to 575px) */
@media (max-width: 575px) {
    body {
        padding: 0.5rem;
    }
    
    main.min-vh-100 {
        padding: 0.5rem;
        min-height: 100vh;
        min-height: -webkit-fill-available;
    }
    
    .container {
        padding-left: 10px;
        padding-right: 10px;
    }
    
    .row {
        margin-left: -10px;
        margin-right: -10px;
    }
    
    .row > * {
        padding-left: 10px;
        padding-right: 10px;
    }
    
    .login-header {
        padding: 1.25rem 1rem;
    }
    
    .login-header i {
        font-size: 2.25rem;
        margin-bottom: 0.5rem;
    }
    
    .login-header h4 {
        font-size: 1.25rem;
        line-height: 1.3;
    }
    
    .login-header p {
        font-size: 0.85rem;
        margin-top: 0.25rem;
    }
    
    .login-card {
        border-radius: 16px;
    }
    
    .login-card .card-body {
        padding: 1.25rem 1rem;
    }
    
    .login-card .form-label {
        font-size: 0.875rem;
        margin-bottom: 0.4rem;
    }
    
    .login-card .form-control {
        padding: 0.65rem 0.9rem;
        font-size: 0.9rem;
        border-radius: 10px;
    }
    
    .login-card .input-group .btn {
        padding: 0.65rem 0.75rem;
        min-width: 44px;
    }
    
    .login-card .input-group .btn i {
        font-size: 0.95rem;
    }
    
    .btn-login {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
        border-radius: 10px;
    }
    
    .forgot-password-link {
        font-size: 0.875rem;
    }
    
    .info-note,
    .security-note {
        font-size: 0.8rem;
        margin-top: 0.5rem;
    }
    
    .portal-link {
        margin-top: 0.75rem;
        padding-top: 0.75rem;
    }
    
    .portal-link a {
        font-size: 0.875rem;
    }
}

/* Short screens (small laptop heights): tighten vertical spacing */
@media (max-height: 750px) and (min-width: 768px) {
    body {
        padding: 0.5rem;
    }
    
    main.min-vh-100 {
        padding-top: 0.5rem !important;
        padding-bottom: 0.5rem !important;
    }

    .login-header {
        padding: 1rem 1.25rem;
    }

    .login-header i {
        font-size: 2rem;
        margin-bottom: 0.5rem;
    }

    .login-header h4 {
        font-size: 1.25rem;
    }

    .login-header p {
        font-size: 0.85rem;
        margin-top: 0.35rem;
    }

    .login-card .card-body {
        padding: 1rem 1.1rem;
    }

    .portal-link {
        margin-top: 0.6rem;
        padding-top: 0.6rem;
    }
}

/* Very short screens (mobile landscape) */
@media (max-height: 500px) and (max-width: 767px) {
    main.min-vh-100 {
        padding: 0.25rem;
    }
    
    .login-header {
        padding: 0.75rem 1rem;
    }
    
    .login-header i {
        font-size: 1.75rem;
        margin-bottom: 0.25rem;
    }
    
    .login-header h4 {
        font-size: 1.1rem;
    }
    
    .login-header p {
        font-size: 0.75rem;
        margin-top: 0.15rem;
    }
    
    .login-card .card-body {
        padding: 1rem 0.9rem;
    }
    
    .login-card .form-label {
        font-size: 0.8rem;
        margin-bottom: 0.3rem;
    }
    
    .login-card .form-control {
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
    }
    
    .login-card .input-group .btn {
        padding: 0.5rem 0.65rem;
        min-width: 40px;
    }
    
    .login-card .input-group .btn i {
        font-size: 0.9rem;
    }
    
    .btn-login {
        padding: 0.6rem 0.9rem;
        font-size: 0.85rem;
    }
}

/* Landscape orientation adjustments */
@media (orientation: landscape) and (max-height: 600px) {
    main.min-vh-100 {
        padding: 0.5rem;
        -webkit-box-align: start;
        -ms-flex-align: start;
        align-items: flex-start;
        padding-top: 1rem;
    }
    
    .login-header {
        padding: 0.75rem 1rem;
    }
    
    .login-header i {
        font-size: 1.5rem;
        margin-bottom: 0.25rem;
    }
    
    .login-card .card-body {
        padding: 1rem;
    }
}

/* Print styles */
@media print {
    body {
        background: white;
    }
    
    .login-card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* High DPI / Retina displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .login-card {
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1), 0 8px 25px rgba(0, 0, 0, 0.06);
    }
}

/* Accessibility - Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        -webkit-animation-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        -webkit-animation-iteration-count: 1 !important;
        animation-iteration-count: 1 !important;
        -webkit-transition-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}