/* ATP Tour inspired CSS for Marco vs Franco Tennis Tracker */

:root {
    --atp-navy: #1B365D;
    --atp-navy-dark: #0F2A47;
    --atp-blue: #0066CC;
    --atp-light-blue: #E8F4FD;
    --atp-red: #FF4757;
    --atp-white: #FFFFFF;
    --atp-gray-100: #F8F9FA;
    --atp-gray-200: #E9ECEF;
    --atp-gray-300: #DEE2E6;
    --atp-gray-600: #6C757D;
    --atp-gray-800: #343A40;
    --atp-yellow: #FFD700;
    --shadow-light: 0 2px 8px rgba(27, 54, 93, 0.08);
    --shadow-medium: 0 4px 16px rgba(27, 54, 93, 0.12);
    --shadow-hover: 0 8px 24px rgba(27, 54, 93, 0.15);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--atp-gray-100);
    color: var(--atp-gray-800);
    line-height: 1.6;
}

/* ATP Theme Colors */
.bg-atp {
    background-color: var(--atp-navy) !important;
}

.bg-atp-dark {
    background-color: var(--atp-navy-dark) !important;
}

.text-atp {
    color: var(--atp-navy) !important;
}

.text-atp-blue {
    color: var(--atp-blue) !important;
}

.btn-atp {
    background-color: var(--atp-blue);
    border-color: var(--atp-blue);
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
    padding: 0.5rem 1.25rem;
    border-radius: 6px;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-atp:hover {
    background-color: var(--atp-navy);
    border-color: var(--atp-navy);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-medium);
}

.btn-outline-atp {
    border-color: var(--atp-blue);
    color: var(--atp-blue);
    font-weight: 600;
    font-size: 0.875rem;
    padding: 0.5rem 1.25rem;
    border-radius: 6px;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-outline-atp:hover {
    background-color: var(--atp-blue);
    border-color: var(--atp-blue);
    color: white;
    transform: translateY(-1px);
}

/* Enhanced Login Page Styling */
.login-container {
    background: linear-gradient(135deg, var(--atp-navy) 0%, var(--atp-navy-dark) 50%, #0A1B2E 100%);
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

.login-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(0, 102, 204, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(0, 102, 204, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.login-container .card {
    border-radius: 20px;
    overflow: hidden;
    border: none;
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.25),
        0 0 0 1px rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.98);
    position: relative;
    z-index: 1;
}

.login-container .card-header {
    background: linear-gradient(135deg, var(--atp-navy) 0%, var(--atp-blue) 100%) !important;
    border-bottom: none;
    padding: 3rem 2rem 2rem;
    position: relative;
    overflow: hidden;
}

.login-container .card-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.login-container .card-header h2 {
    position: relative;
    z-index: 1;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    font-size: 2.25rem;
    letter-spacing: 2px;
}

.login-container .card-header p {
    position: relative;
    z-index: 1;
    opacity: 0.9;
    font-weight: 500;
}

.login-container .card-body {
    padding: 3rem 2.5rem;
    background: linear-gradient(180deg, #ffffff 0%, #fafbfc 100%);
}

.login-container .form-label {
    font-weight: 600;
    color: var(--atp-navy);
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.login-container .form-control {
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    padding: 1rem 1.25rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #ffffff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
}

.login-container .form-control:focus {
    border-color: var(--atp-blue);
    box-shadow: 
        0 0 0 0.2rem rgba(0, 102, 204, 0.15),
        0 4px 12px rgba(0, 0, 0, 0.05);
    background: #ffffff;
    transform: translateY(-1px);
}

.login-container .form-control::placeholder {
    color: #9ca3af;
    font-weight: 400;
}

.login-container .btn-atp {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 1px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--atp-blue) 0%, var(--atp-navy) 100%);
    border: none;
    box-shadow: 
        0 8px 20px rgba(0, 102, 204, 0.3),
        0 2px 4px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.login-container .btn-atp::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 ease;
}

.login-container .btn-atp:hover {
    transform: translateY(-2px);
    box-shadow: 
        0 12px 25px rgba(0, 102, 204, 0.4),
        0 4px 8px rgba(0, 0, 0, 0.15);
}

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

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

.login-container .card-footer {
    background: #f8f9fa;
    border-top: 1px solid #e9ecef;
    padding: 1.5rem 2rem;
}

.login-container .card-footer small {
    color: #6c757d;
    font-weight: 500;
}

/* Login Page Mobile Responsiveness */
@media (max-width: 768px) {
    .login-container .card {
        margin: 1rem;
        border-radius: 16px;
    }
    
    .login-container .card-header {
        padding: 2rem 1.5rem 1.5rem;
    }
    
    .login-container .card-header h2 {
        font-size: 1.75rem;
        letter-spacing: 1px;
    }
    
    .login-container .card-header p {
        font-size: 0.7rem;
        letter-spacing: 1px;
    }
    
    .login-container .card-body {
        padding: 2rem 1.5rem;
    }
    
    .login-container .form-control {
        padding: 0.875rem 1rem;
        font-size: 1rem;
    }
    
    .login-container .btn-atp {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
    
    .login-container .card-footer {
        padding: 1.25rem 1.5rem;
    }
}

@media (max-width: 480px) {
    .login-container .card-header .fas.fa-tennis-ball {
        font-size: 2rem !important;
        margin-bottom: 1rem !important;
    }
    
    .login-container .card-header h2 {
        font-size: 1.5rem;
    }
}

/* Navigation Enhancements */
.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: all 0.3s ease;
    color: rgba(255, 255, 255, 0.85) !important;
    padding: 0.75rem 1rem !important;
    border-radius: 6px;
    margin: 0 0.25rem;
}

.navbar-nav .nav-link:hover {
    color: var(--atp-white) !important;
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.navbar-nav .nav-link:active,
.navbar-nav .nav-link:focus {
    color: var(--atp-white) !important;
    background-color: rgba(255, 255, 255, 0.15);
}

.navbar-nav .nav-link.active {
    color: var(--atp-white) !important;
    font-weight: bold;
    background-color: rgba(255, 255, 255, 0.2);
}

/* Card Enhancements - ATP Style */
.card {
    border: none;
    border-radius: 8px;
    box-shadow: var(--shadow-light);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    background: var(--atp-white);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.card-header {
    border-radius: 8px 8px 0 0 !important;
    border-bottom: 1px solid var(--atp-gray-200);
    font-weight: 700;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 1rem 1.5rem;
    background-color: var(--atp-white) !important;
    color: var(--atp-navy) !important;
}

.card-body {
    padding: 1.5rem;
}

/* ATP-style score card */
.score-card {
    background: linear-gradient(135deg, var(--atp-blue), var(--atp-navy));
    color: white;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.score-card .card-header {
    background: transparent !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    color: white !important;
}

/* Form Enhancements */
.form-control:focus,
.form-select:focus {
    border-color: var(--tennis-green);
    box-shadow: 0 0 0 0.2rem rgba(34, 139, 34, 0.25);
}

.form-control-lg {
    border-radius: 8px;
}

/* Badge Styling */
.badge {
    font-weight: 500;
    padding: 0.5em 0.75em;
}

/* Progress Bar */
.progress {
    height: 20px;
    border-radius: 10px;
    background-color: #e9ecef;
}

.progress-bar {
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: bold;
}

/* Score Display */
.score-display h2 {
    font-weight: bold;
    font-size: 2.5rem;
}

/* List Group Enhancements */
.list-group-item {
    border: none;
    border-bottom: 1px solid #e9ecef;
    padding: 1rem;
    transition: background-color 0.3s ease;
}

.list-group-item:hover {
    background-color: #f8f9fa;
}

.list-group-item:last-child {
    border-bottom: none;
}

/* Blog Posts Styling */
.blog-post {
    background-color: #f8f9fa;
    transition: background-color 0.3s ease;
}

.blog-post:hover {
    background-color: #e9ecef;
}

/* Alert Enhancements */
.alert {
    border: none;
    border-radius: 8px;
    font-weight: 500;
}

/* Footer */
footer {
    margin-top: auto;
}

/* Tennis Ball Animation */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

.fa-tennis-ball {
    animation: bounce 2s infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
    .score-display h2 {
        font-size: 2rem;
    }
    
    .display-5, .display-6 {
        font-size: 1.75rem;
    }
    
    .display-3 {
        font-size: 2.5rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    /* HEAD2HEAD mobile optimizations */
    .player-avatar {
        width: 80px !important;
        height: 80px !important;
    }
    
    .vs-circle {
        width: 60px !important;
        height: 60px !important;
    }
    
    /* Mobile navigation */
    .navbar-nav .nav-link {
        padding: 0.5rem 0.75rem !important;
        margin: 0.1rem;
    }
    
    /* Mobile HEAD2HEAD stats */
    .row.text-center.mb-3.py-2 {
        padding: 0.75rem 0 !important;
    }
    
    .row.text-center.mb-3.py-2 small {
        font-size: 0.75rem;
    }
    
    /* Mobile analytics cards */
    .col-md-3.mb-3 {
        margin-bottom: 1rem !important;
    }
    
    .card-title {
        font-size: 1.5rem;
    }
    
    /* Mobile progress bars */
    .progress {
        height: 16px;
    }
    
    /* Mobile button adjustments */
    .btn-atp {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
}

@media (max-width: 576px) {
    .display-3 {
        font-size: 2rem;
    }
    
    .h4, h4 {
        font-size: 1.25rem;
    }
    
    .h5, h5 {
        font-size: 1rem;
    }
    
    .player-avatar {
        width: 70px !important;
        height: 70px !important;
    }
    
    .vs-circle {
        width: 50px !important;
        height: 50px !important;
    }
    
    .card-body {
        padding: 0.75rem;
    }
    
    .container {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }
    
    /* Stack analytics cards vertically on very small screens */
    .col-md-3 {
        flex: 0 0 50%;
        max-width: 50%;
    }
}

/* Loading States */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Chart Container */
.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
}

/* Custom Scrollbar */
.blog-posts::-webkit-scrollbar {
    width: 6px;
}

.blog-posts::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.blog-posts::-webkit-scrollbar-thumb {
    background: var(--tennis-green);
    border-radius: 3px;
}

.blog-posts::-webkit-scrollbar-thumb:hover {
    background: var(--tennis-green-dark);
}

/* Breadcrumb */
.breadcrumb {
    background-color: transparent;
    padding: 0;
    margin-bottom: 1rem;
}

.breadcrumb-item + .breadcrumb-item::before {
    color: var(--tennis-green);
}

.breadcrumb-item a {
    color: var(--tennis-green);
    text-decoration: none;
}

.breadcrumb-item a:hover {
    text-decoration: underline;
}

/* Icon Enhancements */
.fa-trophy {
    color: var(--tennis-yellow);
}

.fa-fire {
    color: #FF6B6B;
}

/* Table Enhancements */
.table {
    border-collapse: separate;
    border-spacing: 0;
}

.table th {
    border-top: none;
    background-color: var(--tennis-green);
    color: white;
    font-weight: 600;
}

/* Tooltip Styling */
.tooltip {
    font-size: 0.875rem;
}

.tooltip-inner {
    background-color: var(--tennis-court);
    border-radius: 6px;
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

.slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(-20px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}