/* Modern Login Page - World-Class UI/UX Design 2024-2025 */

/* ===== CSS VARIABLES ===== */
:root {
    /* Colors */
    --primary: #60A5FA;
    --primary-dark: #3B82F6;
    --primary-light: #93C5FD;
    --secondary: #18B98F;
    --accent: #A78BFA;
    --error: #EF4444;
    --success: #10B981;
    --warning: #F59E0B;
    
    /* Text Colors */
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-tertiary: #94A3B8;
    --text-inverse: #FFFFFF;
    
    /* Background Colors */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8FAFC;
    --bg-tertiary: #F1F5F9;
    --bg-glass: rgba(255, 255, 255, 0.7);
    --bg-glass-dark: rgba(255, 255, 255, 0.1);
    
    /* Border Colors */
    --border-light: rgba(226, 232, 240, 0.8);
    --border-medium: rgba(203, 213, 225, 0.8);
    --border-focus: var(--primary);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #F1F5F9;
        --text-secondary: #CBD5E1;
        --text-tertiary: #94A3B8;
        --bg-primary: #0F172A;
        --bg-secondary: #1E293B;
        --bg-tertiary: #334155;
        --bg-glass: rgba(15, 23, 42, 0.8);
        --bg-glass-dark: rgba(15, 23, 42, 0.6);
        --border-light: rgba(51, 65, 85, 0.8);
        --border-medium: rgba(71, 85, 105, 0.8);
    }
}

/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

.d-none {
    display: none !important;
}

/* ===== ANIMATED BACKGROUND ===== */
.auth-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
    background: linear-gradient(135deg, #667EEA 0%, #764BA2 25%, #F093FB 50%, #4FACFE 75%, #00F2FE 100%);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(96, 165, 250, 0.8) 0%, rgba(96, 165, 250, 0) 70%);
    top: -200px;
    left: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(24, 185, 143, 0.8) 0%, rgba(24, 185, 143, 0) 70%);
    bottom: -150px;
    right: -150px;
    animation-delay: 5s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(167, 139, 250, 0.8) 0%, rgba(167, 139, 250, 0) 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -30px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

.grid-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

/* ===== MAIN CONTAINER ===== */
.auth-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    gap: var(--spacing-xl);
}

/* ===== BRAND SECTION ===== */
.auth-brand {
    text-align: center;
    margin-bottom: var(--spacing-md);
    animation: fadeInDown 0.6s ease-out;
}

.brand-logo {
    display: inline-block;
    margin-bottom: var(--spacing-sm);
    animation: scaleIn 0.6s ease-out 0.2s both;
}

.brand-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--text-inverse);
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.brand-subtitle {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.9);
    font-weight: 400;
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.1);
}

/* ===== AUTH CARD (GLASSMORPHISM) ===== */
.auth-card-new {
    width: 100%;
    max-width: 440px;
    background: var(--bg-glass);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-glass);
    overflow: hidden;
    animation: fadeInUp 0.6s ease-out 0.3s both;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.auth-card-new:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.5);
}

.card-header-new {
    padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.card-title-new {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.02em;
}

.card-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    font-weight: 400;
}

.card-body-new {
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* ===== ALERTS ===== */
.alert-new {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    animation: slideDown 0.3s ease-out;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.alert-text {
    flex: 1;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== SOCIAL BUTTON ===== */
.btn-social {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-primary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    min-height: 52px;
}

.btn-social:hover:not(:disabled) {
    background: var(--bg-secondary);
    border-color: var(--border-focus);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-social:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-social:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-social.loading {
    pointer-events: none;
}

/* ===== DIVIDER ===== */
.divider-new {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.divider-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-medium), transparent);
}

.divider-text {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ===== FORM ELEMENTS ===== */
.auth-form-new {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group-new {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-label-new {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.form-label-new i {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

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

.form-input-new {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    padding-right: 3rem;
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    min-height: 52px;
    outline: none;
}

.form-input-new::placeholder {
    color: var(--text-tertiary);
    opacity: 0.6;
}

.form-input-new:focus {
    border-color: var(--border-focus);
    background: var(--bg-primary);
    box-shadow: 0 0 0 4px rgba(96, 165, 250, 0.1);
}

.input-wrapper.focused .input-focus-line {
    width: 100%;
    opacity: 1;
}

.input-focus-line {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    opacity: 0;
}

.password-toggle {
    position: absolute;
    right: var(--spacing-md);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-fast);
    z-index: 1;
}

.password-toggle:hover {
    color: var(--text-primary);
}

.password-toggle:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

.form-help {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-top: var(--spacing-xs);
}

.form-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-xs);
}

.forgot-link {
    font-size: var(--font-size-sm);
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

/* ===== PRIMARY BUTTON ===== */
.btn-primary-new {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-inverse);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 4px 14px 0 rgba(96, 165, 250, 0.4);
    min-height: 52px;
    position: relative;
    overflow: hidden;
}

.btn-primary-new::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 var(--transition-slow);
}

.btn-primary-new:hover:not(:disabled)::before {
    left: 100%;
}

.btn-primary-new:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(96, 165, 250, 0.5);
}

.btn-primary-new:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 10px 0 rgba(96, 165, 250, 0.4);
}

.btn-primary-new:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-primary-new.loading {
    pointer-events: none;
}

.btn-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-icon {
    transition: transform var(--transition-base);
}

.btn-primary-new:hover:not(:disabled) .btn-icon {
    transform: translateX(4px);
}

/* ===== SPINNER ===== */
.spinner-new {
    display: inline-flex;
    gap: 4px;
    align-items: center;
}

.spinner-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    animation: spinnerBounce 1.4s ease-in-out infinite both;
}

.spinner-dot:nth-child(1) {
    animation-delay: -0.32s;
}

.spinner-dot:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes spinnerBounce {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* ===== AUTH FOOTER ===== */
.auth-footer {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.footer-link {
    font-size: var(--font-size-base);
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* ===== FEATURES SHOWCASE (DESKTOP ONLY) ===== */
.features-showcase {
    display: none;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    max-width: 1200px;
    width: 100%;
    animation: fadeInUp 0.6s ease-out 0.5s both;
    box-sizing: border-box;
}

.feature-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--bg-glass-dark);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    transition: transform var(--transition-base);
    overflow: hidden;
    box-sizing: border-box;
}

.feature-item:hover {
    transform: translateY(-4px);
}

.feature-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.2), rgba(24, 185, 143, 0.2));
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xl);
    color: var(--text-inverse);
}

.feature-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-inverse);
    margin-bottom: var(--spacing-xs);
    word-wrap: break-word;
}

.feature-desc {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.5;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ===== RESPONSIVE DESIGN ===== */

/* Mobile First - Base styles above are mobile */

/* Tablet and up */
@media (min-width: 768px) {
    .auth-container {
        padding: var(--spacing-xl);
    }
    
    .auth-card-new {
        max-width: 480px;
    }
    
    .card-body-new {
        padding: var(--spacing-2xl);
    }
}

/* Desktop */
@media (min-width: 1024px) {
    .auth-container {
        flex-direction: row;
        justify-content: center;
        align-items: center;
        padding: var(--spacing-2xl) 20px var(--spacing-2xl);
        gap: var(--spacing-2xl);
        max-width: 1400px;
        margin: 0 auto;
        padding-top: calc(var(--spacing-2xl) + 80px); /* Account for header */
        width: 100%;
        box-sizing: border-box;
    }
    
    .auth-brand {
        flex: 0 0 auto;
        text-align: left;
        margin-bottom: 0;
        min-width: 0;
        max-width: 400px;
        flex-shrink: 1;
    }
    
    .brand-title {
        font-size: 3.5rem;
    }
    
    .brand-subtitle {
        font-size: var(--font-size-xl);
    }
    
    .auth-card-new {
        flex: 0 0 auto;
        min-width: 0;
        max-width: 520px;
        width: 100%;
        box-sizing: border-box;
    }
    
    .features-showcase {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        position: fixed;
        bottom: var(--spacing-xl);
        left: 50%;
        transform: translateX(-50%);
        width: calc(100vw - 40px);
        max-width: 1200px;
        z-index: 10;
        padding: 0 var(--spacing-lg);
        box-sizing: border-box;
    }
    
    .feature-item {
        max-width: 100%;
        min-width: 0;
        overflow: hidden;
    }
}

/* Large Desktop */
@media (min-width: 1280px) {
    .auth-card-new {
        min-width: 520px;
        max-width: 560px;
    }
    
    .brand-title {
        font-size: 4rem;
    }
    
    .features-showcase {
        max-width: 1400px;
    }
}

/* Extra Large Desktop */
@media (min-width: 1536px) {
    .auth-card-new {
        min-width: 560px;
        max-width: 600px;
    }
}

/* Small Mobile Devices */
@media (max-width: 480px) {
    .auth-container {
        padding: var(--spacing-md);
    }
    
    .auth-card-new {
        border-radius: var(--radius-xl);
    }
    
    .card-header-new {
        padding: var(--spacing-lg);
    }
    
    .card-body-new {
        padding: var(--spacing-lg);
    }
    
    .brand-title {
        font-size: var(--font-size-3xl);
    }
    
    .brand-subtitle {
        font-size: var(--font-size-base);
    }
}

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

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .auth-card-new {
        border: 2px solid var(--text-primary);
    }
    
    .form-input-new {
        border-width: 2px;
    }
    
    .btn-primary-new {
        border: 2px solid var(--text-inverse);
    }
}

/* Print Styles */
@media print {
    .auth-background,
    .gradient-orb,
    .grid-pattern {
        display: none;
    }
    
    .auth-container {
        background: white;
    }
}