:root {
    /* Mastercard Brand Colors */
    --primary-red: #eb001b;
    --primary-orange: #ff5f00;
    --primary-yellow: #f79e1b;
    --dark-navy: #1a1f36;
    --light-gray: #f5f7fa;
    --medium-gray: #6c757d;
    --white: #ffffff;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --card-shadow: rgba(0, 0, 0, 0.08);
    --gradient-primary: linear-gradient(135deg, var(--primary-red) 0%, var(--primary-orange) 50%, var(--primary-yellow) 100%);
    --gradient-card: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    background-attachment: fixed;
    color: var(--dark-navy);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Background Pattern Overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* ===== Navigation ===== */
.navbar-custom {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    padding: 1.2rem 0;
    transition: all 0.3s ease;
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.6rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
}

.navbar-nav .nav-link {
    color: var(--dark-navy) !important;
    font-weight: 500;
    margin: 0 0.3rem;
    transition: all 0.3s ease;
    border-radius: 12px;
    padding: 0.7rem 1.2rem !important;
    position: relative;
    overflow: hidden;
}

.navbar-nav .nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    transition: all 0.3s ease;
    z-index: -1;
}

.navbar-nav .nav-link:hover::before,
.navbar-nav .nav-link.active::before {
    left: 0;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--white) !important;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(235, 0, 27, 0.3);
}

/* ===== NAV ACTION BUTTONS ===== */
.nav-btn-logout,
.nav-btn-login {
    font-weight: 600 !important;
    border-radius: 12px !important;
    padding: 0.6rem 1.4rem !important;
    margin: 0.2rem 0.3rem !important;
    transition: all 0.3s ease !important;
    color: #fff !important;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}

.nav-btn-logout {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%) !important;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.nav-btn-logout:hover {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%) !important;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(239, 68, 68, 0.45) !important;
    color: #fff !important;
}

.nav-btn-login {
    background: var(--gradient-primary) !important;
    box-shadow: 0 4px 15px rgba(235, 0, 27, 0.3);
}

.nav-btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(235, 0, 27, 0.45) !important;
    color: #fff !important;
}

@media (min-width: 992px) {

    .nav-btn-logout,
    .nav-btn-login {
        margin-left: auto !important;
    }
}

/* ===== User Info ===== */
.user-info {
    background: var(--gradient-card);
    border: 2px solid rgba(235, 0, 27, 0.1);
    border-radius: 15px;
    padding: 0.8rem 1.5rem;
    color: var(--dark-navy);
    font-weight: 500;
    box-shadow: 0 4px 15px var(--card-shadow);
}

/* ===== Btn Logout ===== */
.btn-logout {
    background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
    color: var(--white) !important;
    border: none;
    border-radius: 12px;
    padding: 0.7rem 1.8rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.btn-logout:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(239, 68, 68, 0.4);
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
}

/* ===== Main Content ===== */
.main-content {
    padding: 2rem 0;
    flex: 1;
}

/* ===== Content Card ===== */
.content-card {
    background: var(--gradient-card);
    border-radius: 20px;
    box-shadow: 0 20px 60px var(--card-shadow);
    border: 1px solid rgba(255, 255, 255, 0.2);
    overflow: hidden;
    transition: all 0.4s ease;
    backdrop-filter: blur(10px);
    margin-bottom: 2rem;
}

.content-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.15);
}

.card-header-custom {
    background: var(--gradient-primary);
    color: var(--white);
    font-weight: 700;
    font-size: 1.3rem;
    padding: 2rem;
    border: none;
    position: relative;
    overflow: hidden;
}

.card-header-custom::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.card-body-custom {
    padding: 2.5rem;
    background: var(--white);
}

/* ===== Stats ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--white);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 10px var(--card-shadow);
    border-left: 4px solid var(--primary-red);
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-red);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--dark-navy);
    font-size: 0.9rem;
    opacity: 0.8;
}

/* ===== Buttons ===== */
.btn-primary-custom {
    background: var(--gradient-primary);
    border: none;
    border-radius: 12px;
    padding: 1rem 2.5rem;
    font-weight: 700;
    transition: all 0.3s ease;
    color: var(--white);
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(235, 0, 27, 0.3);
}

.btn-primary-custom::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: all 0.5s;
}

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

.btn-primary-custom:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(235, 0, 27, 0.4);
}

/* ===== Alert Styles ===== */
.alert-custom {
    border: none;
    border-radius: 15px;
    padding: 1.5rem 2rem;
    font-weight: 500;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.alert-success-custom {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(5, 150, 105, 0.1) 100%);
    color: var(--success);
    border-left: 5px solid var(--success);
}

.alert-danger-custom {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(220, 38, 38, 0.1) 100%);
    color: var(--danger);
    border-left: 5px solid var(--danger);
}

/* ===== Forms ===== */
.form-control-custom {
    border: 2px solid #e9ecef;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control-custom:focus {
    border-color: var(--primary-orange);
    box-shadow: 0 0 0 0.2rem rgba(255, 95, 0, 0.25);
}

/* ===== Pagination ===== */
.pagination-custom {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 2rem;
    gap: 0.5rem;
}

.pagination-custom .page-link {
    border: 2px solid var(--primary-red);
    color: var(--primary-red);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 500;
}

.pagination-custom .page-link:hover {
    background: var(--primary-red);
    color: var(--white);
    transform: translateY(-2px);
}

.pagination-custom .page-link.active {
    background: var(--gradient-primary);
    color: var(--white);
    border-color: var(--primary-red);
}

.pagination-custom .page-link.disabled {
    opacity: 0.5;
    pointer-events: none;
}

/* ===== Price & Prediction ===== */
.price-display {
    background: var(--gradient-primary);
    color: white;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    margin-bottom: 2rem;
}

.price-value {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

/* ===== Sort Buttons ===== */
.sort-buttons {
    margin-bottom: 1rem;
}

/* ===== Loading Spinner ===== */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 0.8s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ===== Footer ===== */
.footer {
    background: linear-gradient(135deg, var(--dark-navy) 0%, #0f172a 100%);
    color: var(--white);
    padding: 3rem 0 2rem;
    margin-top: 4rem;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-left {
    flex: 1;
    text-align: left;
}

.footer-brand {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.footer-description {
    color: #94a3b8;
    font-size: 0.9rem;
    line-height: 1.6;
    max-width: 400px;
}

.footer-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

.footer-links a:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-icon:hover {
    background: var(--gradient-primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(235, 0, 27, 0.3);
}

.footer-bottom {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: #64748b;
    font-size: 0.85rem;
}

/* ===== Positive / Negative ===== */
.positive {
    color: var(--success);
}

.negative {
    color: var(--danger);
}

/* ===== Letter Spacing ===== */
.letter-spacing-2 {
    letter-spacing: 2px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .navbar-nav {
        text-align: center;
        margin-top: 1rem;
    }

    .user-info {
        margin: 0.5rem 0;
        text-align: center;
    }

    .main-content {
        padding: 1rem 0;
    }

    .card-body-custom {
        padding: 1.5rem;
    }
}