/*!
 * SMID Login System - Modern Design
 * Optimized for accessibility and modern browsers
 * Compatible with jQuery UI themes
 */

/* CSS Reset and Base Styles */
* {
    box-sizing: border-box;
}

:root {
    --primary-color: #F6AF39;
    --primary-dark: #E09520;
    --secondary-color: #f37676;
    --secondary-dark: #E78282;
    --bg-gradient-start: #ffffff;
    --bg-gradient-end: #f8f9fa;
    --bg-accent: #F6AF39;
    --card-bg: rgba(255, 255, 255, 0.95);
    --text-primary: #2c3e50;
    --text-secondary: #6c757d;
    --border-color: #dee2e6;
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 8px 25px rgba(0, 0, 0, 0.12);
    --shadow-heavy: 0 15px 35px rgba(0, 0, 0, 0.15);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Screen reader only content */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Loading overlay */
#sumsk {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(5px);
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    color: var(--text-primary);
    border-radius: var(--border-radius);
    text-align: center;
}

#sumsk span {
    text-align: center;
    display: block;
    width: 100%;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Body and Background */
body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    font-family: 'Segoe UI', 'Open Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    overflow-x: hidden;
}

.background-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    z-index: -1;
    overflow: hidden;
}

.background-overlay::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(246, 175, 57, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(246, 175, 57, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(246, 175, 57, 0.05) 0%, transparent 50%);
    animation: floatShapes 20s ease-in-out infinite;
}

.background-overlay::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(45deg, transparent 45%, rgba(246, 175, 57, 0.02) 50%, transparent 55%),
        linear-gradient(-45deg, transparent 45%, rgba(246, 175, 57, 0.02) 50%, transparent 55%);
    background-size: 60px 60px, 40px 40px;
    animation: slidePattern 30s linear infinite;
}

@keyframes floatShapes {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(120deg); }
    66% { transform: translate(-30px, 30px) rotate(240deg); }
}

@keyframes slidePattern {
    0% { background-position: 0 0, 0 0; }
    100% { background-position: 60px 60px, -40px -40px; }
}

/* Main Container */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
    position: relative;
}

.login-container::before {
    content: '';
    position: absolute;
    top: 10%;
    left: 10%;
    width: 100px;
    height: 100px;
    border: 2px solid rgba(246, 175, 57, 0.1);
    border-radius: 50%;
    animation: floatCircle1 15s ease-in-out infinite;
}

.login-container::after {
    content: '';
    position: absolute;
    bottom: 15%;
    right: 15%;
    width: 80px;
    height: 80px;
    border: 2px solid rgba(246, 175, 57, 0.08);
    transform: rotate(45deg);
    animation: floatSquare 18s ease-in-out infinite reverse;
}

@keyframes floatCircle1 {
    0%, 100% { transform: translateY(0) scale(1); opacity: 0.1; }
    50% { transform: translateY(-20px) scale(1.1); opacity: 0.2; }
}

@keyframes floatSquare {
    0%, 100% { transform: rotate(45deg) translateY(0); opacity: 0.08; }
    50% { transform: rotate(45deg) translateY(-15px); opacity: 0.15; }
}

/* Login Card */
.login-card {
    position: relative;
    width: 100%;
    max-width: 480px;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-heavy);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid rgba(246, 175, 57, 0.2);
}

.login-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(246, 175, 57, 0.15);
}

/* Login Header */
.login-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 30px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.login-header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, transparent 70%);
    animation: shimmer 4s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { transform: translateX(-100%) translateY(-100%) rotate(0deg); }
    50% { transform: translateX(100%) translateY(100%) rotate(180deg); }
}

.logo-container {
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
}

.logo {
    border-radius: 50%;
    box-shadow: var(--shadow-medium);
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.1) rotate(5deg);
}

.login-title {
    margin: 0;
    font-size: 24px;
    font-weight: 600;
    letter-spacing: 0.5px;
    position: relative;
    z-index: 1;
}

/* Form Styles */
.login-form {
    padding: 40px 30px 30px;
    position: relative;
}

.form-group {
    margin-bottom: 25px;
    position: relative;
}

.form-group:last-of-type {
    margin-bottom: 35px;
}

/* Input Fields */
#name, #pass {
    width: 100%;
    height: 56px;
    padding: 16px 20px;
    font-size: 16px;
    line-height: 1.5;
    color: var(--text-primary);
    background: #fff;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: var(--transition);
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

#name:focus, #pass:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(246, 175, 57, 0.1);
    transform: translateY(-2px);
}

#name:hover, #pass:hover {
    border-color: var(--primary-dark);
    box-shadow: var(--shadow-light);
}

#name::placeholder, #pass::placeholder {
    color: #999;
    opacity: 1;
    transition: var(--transition);
}

#name:focus::placeholder, #pass:focus::placeholder {
    opacity: 0.5;
    transform: translateY(-2px);
}

/* Field Messages */
.field-message, #nameal, #passal {
    display: none;
    margin: 8px 0 0;
    padding: 8px 12px;
    font-size: 12px;
    color: var(--secondary-color);
    background: rgba(243, 118, 118, 0.1);
    border-left: 3px solid var(--secondary-color);
    border-radius: 0 4px 4px 0;
}

/* Login Button - jQuery UI Style */
.login-button, #signupb {
    position: relative;
    width: 100%;
    height: 56px;
    padding: 0 24px;
    font-size: 16px;
    font-weight: 600;
    color: #333;
    background: linear-gradient(to bottom, #ffffff 0%, #e6e6e6 100%);
    border: 1px solid #d3d3d3;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    overflow: hidden;
    font-family: inherit;
}

.login-button:hover, #signupb:hover {
    background: linear-gradient(to bottom, #e6e6e6 0%, #d4d4d4 100%);
    border-color: #999;
    transform: translateY(-1px);
    box-shadow: var(--shadow-light);
}

.login-button:active, #signupb:active {
    background: linear-gradient(to bottom, #d4d4d4 0%, #e6e6e6 100%);
    transform: translateY(0);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

/* jQuery UI Lightness theme button */
body.jquery-theme-lightness .login-button,
body.jquery-theme-lightness #signupb {
    background: linear-gradient(to bottom, #ffffff 0%, #e6e6e6 100%);
    border: 1px solid #d3d3d3;
    color: #333;
}

body.jquery-theme-lightness .login-button:hover,
body.jquery-theme-lightness #signupb:hover {
    background: linear-gradient(to bottom, #e6e6e6 0%, #d4d4d4 100%);
    border-color: #999;
}

/* jQuery UI Start theme button */
body.jquery-theme-start .login-button,
body.jquery-theme-start #signupb {
    background: linear-gradient(to bottom, #f6f6f6 0%, #e6e6e6 100%);
    border: 1px solid #c5c5c5;
    color: #2e6e9e;
    font-weight: bold;
}

body.jquery-theme-start .login-button:hover,
body.jquery-theme-start #signupb:hover {
    background: linear-gradient(to bottom, #e6e6e6 0%, #d4d4d4 100%);
    border-color: #2e6e9e;
}

.login-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none !important;
}

.button-text {
    display: inline-block;
    transition: var(--transition);
}

.button-loading {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.login-button.loading .button-text {
    opacity: 0;
}

.login-button.loading .button-loading {
    display: inline-block;
}

/* Footer */
.page-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(15px);
    border-top: 1px solid rgba(246, 175, 57, 0.15);
    z-index: 10;
}

.footer-content {
    padding: 15px 20px;
    text-align: center;
}

.footer-content p {
    margin: 0;
    font-size: 12px;
    color: var(--text-secondary);
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .login-container {
        padding: 10px;
        align-items: flex-start;
        padding-top: 50px;
    }
    
    .login-card {
        max-width: 100%;
        margin-bottom: 80px;
    }
    
    .login-header {
        padding: 25px 15px;
    }
    
    .login-title {
        font-size: 20px;
    }
    
    .login-form {
        padding: 30px 20px 25px;
    }
    
    .page-footer {
        position: relative;
        margin-top: 20px;
    }
}

@media (max-width: 480px) {
    .logo {
        width: 60px;
        height: 60px;
    }
    
    .login-title {
        font-size: 18px;
    }
    
    #name, #pass, .login-button, #signupb {
        height: 48px;
        font-size: 14px;
    }
    
    .login-form {
        padding: 25px 15px 20px;
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-gradient-start: #1a1a1a;
        --bg-gradient-end: #2d2d2d;
        --text-primary: #f0f0f0;
        --text-secondary: #ccc;
        --card-bg: rgba(40, 40, 40, 0.98);
        --border-color: #555;
    }
    
    #name, #pass {
        background: rgba(60, 60, 60, 0.9);
        color: var(--text-primary);
        border-color: var(--border-color);
    }
    
    #name::placeholder, #pass::placeholder {
        color: #aaa;
    }
    
    .page-footer {
        background: rgba(40, 40, 40, 0.95);
        border-top: 1px solid rgba(246, 175, 57, 0.2);
    }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    *, ::before, ::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .background-overlay::before,
    .background-overlay::after,
    .login-container::before,
    .login-container::after {
        animation: none;
    }
}

/* Focus indicators for keyboard navigation */
.login-button:focus-visible, #signupb:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .background-overlay,
    .page-footer {
        display: none;
    }
    
    .login-container {
        background: white;
        color: black;
    }
    
    .login-card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* Enhanced Input States */
.login-form input.error {
    border-color: var(--secondary-color) !important;
    background-color: rgba(243, 118, 118, 0.05);
    animation: shake 0.5s ease-in-out;
}

.login-form input.valid {
    border-color: #4CAF50 !important;
    background-color: rgba(76, 175, 80, 0.05);
}

.login-form input:not(.error):not(.valid) {
    border-color: var(--border-color);
    background-color: #fff;
}

.field-message.show {
    display: block !important;
    animation: slideDown 0.3s ease;
}

.field-message:not(.show) {
    animation: slideUp 0.3s ease;
}

.login-button.disabled, #signupb.disabled {
    opacity: 0.6 !important;
    cursor: not-allowed !important;
    transform: none !important;
    background: #f0f0f0 !important;
    border-color: #ccc !important;
    color: #999 !important;
}

.login-form.submitting {
    pointer-events: none;
    opacity: 0.8;
}

#sumsk.success {
    background: rgba(76, 175, 80, 0.25);
    color: white;
    border: 2px solid rgba(76, 175, 80, 0.3);
}

#sumsk.success .loading-spinner {
    border-top-color: white;
}

/* Enhanced animations */
@keyframes slideDown {
    from { 
        opacity: 0; 
        transform: translateY(-10px); 
        max-height: 0;
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
        max-height: 50px;
    }
}

@keyframes slideUp {
    from { 
        opacity: 1; 
        transform: translateY(0); 
        max-height: 50px;
    }
    to { 
        opacity: 0; 
        transform: translateY(-10px); 
        max-height: 0;
    }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

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

/* Enhanced loading states */
.login-card {
    animation: fadeInUp 0.6s ease-out;
}

.login-form input:focus {
    animation: focusGlow 0.3s ease;
}

@keyframes focusGlow {
    0% { box-shadow: 0 0 0 0 rgba(246, 175, 57, 0.4); }
    100% { box-shadow: 0 0 0 3px rgba(246, 175, 57, 0.1); }
}

/* jQuery UI theme integration */
.ui-widget {
    font-family: 'Segoe UI', 'Open Sans', -apple-system, BlinkMacSystemFont, sans-serif !important;
}

/* Theme-specific adjustments for lightness theme */
body.jquery-theme-lightness {
    --primary-color: #F6AF39;
    --primary-dark: #E09520;
    --bg-gradient-start: #ffffff;
    --bg-gradient-end: #f8f9fa;
}

/* Theme-specific adjustments for start theme */
body.jquery-theme-start {
    --primary-color: #2E6E9E;
    --primary-dark: #1E4E7E;
    --secondary-color: #CD0A0A;
    --secondary-dark: #AD0000;
    --bg-gradient-start: #ffffff;
    --bg-gradient-end: #f1f3f4;
}

/* Compatibility styles for older browsers */
.login-card {
    background: #fff;
    background: var(--card-bg);
}

.background-overlay {
    background: #ffffff;
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
}