:root {
    /* Color Palette - Premium Earth Tones */
    --color-bg-primary: #f8f9fa;
    --color-bg-secondary: #ffffff;
    --color-bg-sidebar: #1a1c1e;

    --color-text-primary: #1a1c1e;
    --color-text-secondary: #6c757d;
    --color-text-inverse: #ffffff;

    --color-accent: #2e7d32;
    /* Forest Green */
    --color-accent-hover: #1b5e20;
    --color-accent-light: #e8f5e9;

    --color-gold: #c5a065;
    /* Elegant Gold for highlights */

    --color-border: #e0e0e0;

    /* Spacing & Layout */
    --sidebar-width: 260px;
    --header-height: 70px;
    --radius-md: 12px;
    --radius-lg: 16px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.05);

    /* Transitions */
    --transition-fast: 0.2s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    height: 100vh;
    overflow: hidden;
}

/* Layout */
#app-container {
    display: flex;
    height: 100vh;
}

/* Sidebar */
#sidebar {
    width: var(--sidebar-width);
    background-color: var(--color-bg-sidebar);
    color: var(--color-text-inverse);
    padding: 1.5rem 1.25rem;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.sidebar-close-btn {
    display: none;
    background: transparent;
    border: none;
    color: #9e9e9e;
    font-size: 1.35rem;
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-md);
    line-height: 1;
}

.sidebar-close-btn:hover {
    color: white;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-text-inverse);
}

.logo i {
    color: var(--color-gold);
}

.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    flex: 1;
}

.nav-links li {
    padding: 0.65rem 0.9rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    color: #9e9e9e;
    transition: var(--transition-fast);
    font-size: 0.92rem;
    -webkit-tap-highlight-color: transparent;
}

.nav-links li:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--color-text-inverse);
}

.nav-links li.active {
    background-color: var(--color-accent);
    color: var(--color-text-inverse);
    box-shadow: 0 4px 12px rgba(46, 125, 50, 0.3);
}

/* Main Content */
#main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.top-bar {
    height: var(--header-height);
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
}

#page-title {
    font-size: 1.5rem;
    font-weight: 600;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
}

.avatar {
    width: 40px;
    height: 40px;
    background-color: var(--color-gold);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

#view-container {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
}

/* Components: Cards */
.card {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: var(--transition-fast);
}

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

/* Components: Buttons */
.btn {
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background-color: var(--color-accent);
    color: white;
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
}

.btn-outline:hover {
    background-color: var(--color-bg-primary);
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    text-align: left;
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.data-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
}

.data-table tr:hover {
    background-color: var(--color-bg-primary);
}

/* Forms */
.form-group {
    margin-bottom: 1.2rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.form-input {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    outline: none;
    transition: var(--transition-fast);
}

.form-input:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-light);
}

/* Modal */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal {
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.close-modal {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-secondary);
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin: 0.5rem 0;
}

.stat-label {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* Status Badges */
.badge {
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-block;
}

.badge-alive {
    background-color: var(--color-accent-light);
    color: var(--color-accent);
}

.badge-deceased {
    background-color: #ffebee;
    color: #c62828;
}

/* Button Variants */
.btn-danger {
    background-color: #dc3545;
    color: white;
}

.btn-danger:hover {
    background-color: #c82333;
}

.btn-sm {
    padding: 4px 8px;
    font-size: 12px;
}


/* Login Screen */
#login-container {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at center, #2e7d32 0%, #1a1c1e 100%);
}

.login-card {
    background: white;
    padding: 3rem;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 400px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    text-align: center;
}

.login-header {
    margin-bottom: 2rem;
}

.login-logo {
    font-size: 3rem;
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.login-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.hidden {
    display: none !important;
}

/* ==========================================================================
   Mobile & Tablet Responsiveness
   ========================================================================== */

.mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--color-text-primary);
    padding: 6px;
    border-radius: var(--radius-md);
    align-items: center;
    justify-content: center;
}

.mobile-menu-btn:hover {
    background-color: var(--color-bg-primary);
}

#sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(2px);
    z-index: 998;
}

#sidebar-overlay.active {
    display: block;
}

#mobile-bottom-nav {
    display: none;
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: inline-flex;
    }

    .sidebar-close-btn {
        display: inline-flex;
    }

    #sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: 285px;
        max-width: 85vw;
        height: 100vh;
        height: 100dvh;
        z-index: 999;
        transform: translateX(-100%);
        transition: transform 0.28s ease-in-out;
        box-shadow: 4px 0 25px rgba(0, 0, 0, 0.45);
        overflow-y: auto !important;
        -webkit-overflow-scrolling: touch;
        overscroll-behavior: contain;
        padding: 1.5rem 1.25rem;
        padding-bottom: calc(100px + env(safe-area-inset-bottom, 20px));
    }

    #sidebar.open {
        transform: translateX(0);
    }

    .top-bar {
        padding: 0 1rem;
    }

    #page-title {
        font-size: 1.15rem;
    }

    #view-container {
        padding: 1rem;
        padding-bottom: calc(75px + env(safe-area-inset-bottom, 0px));
        -webkit-overflow-scrolling: touch;
    }

    /* Mobile Bottom Navigation Bar */
    #mobile-bottom-nav {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: 60px;
        background: #1a1c1e;
        border-top: 1px solid rgba(255, 255, 255, 0.12);
        z-index: 990;
        justify-content: space-around;
        align-items: center;
        padding-bottom: env(safe-area-inset-bottom, 0px);
    }

    .mobile-nav-item {
        background: transparent;
        border: none;
        color: #9e9e9e;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 3px;
        font-size: 0.68rem;
        cursor: pointer;
        padding: 6px 12px;
        font-family: inherit;
        -webkit-tap-highlight-color: transparent;
        transition: color 0.18s, transform 0.15s;
    }

    .mobile-nav-item svg {
        stroke: currentColor;
    }

    .mobile-nav-item.active {
        color: #4caf50;
        font-weight: 600;
    }

    .mobile-nav-item:active {
        transform: scale(0.92);
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .card {
        padding: 1.1rem;
        overflow-x: auto;
    }

    .data-table {
        min-width: 550px;
    }

    .modal {
        width: 95%;
        max-width: 95%;
        padding: 1.25rem;
        max-height: 90vh;
        max-height: 90dvh;
        overflow-y: auto;
    }

    .login-card {
        padding: 2rem 1.5rem;
        width: 90%;
    }
}