:root {
    /* Color Palette */
    --primary-color: #1a237e;
    --primary-color-hover: #283593;
    --secondary-color: #f5f7fa;
    --text-color-main: #1a237e;
    --text-color-light: #ffffff;
    --text-color-grey: #9e9e9e;
    --bg-color-main: #f5f7fa;
    --bg-color-sidenav: #1a237e;
    --bg-color-footer: #000000;
    --border-color-light: rgba(255,255,255,0.1);
    
    /* Spacing */
    --nav-width: 240px;
    --header-height: 56px;
    
    /* Typography */
    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

body {
    display: flex;
    min-height: 100vh;
    flex-direction: column;
    background-color: var(--bg-color-main);
    font-family: var(--font-stack);
}

main {
    flex: 1 0 auto;
}

/* Layout Utilities */
.full-width {
    width: 100%;
}

/* Sidebar & Navigation */
.sidenav-main {
    width: var(--nav-width) !important;
    background-color: var(--bg-color-sidenav) !important;
    border-right: 1px solid rgba(0,0,0,0.1);
}

.sidenav-main li a {
    color: rgba(255,255,255,0.8) !important;
    font-weight: 500;
    display: flex;
    align-items: center;
    height: 40px;
    line-height: 40px;
    padding: 0 16px !important;
}

.sidenav-main li a i {
    color: rgba(255,255,255,0.8) !important;
    margin-right: 6px;
}

.sidenav-main li a:hover {
    background-color: var(--border-color-light) !important;
    color: var(--text-color-light) !important;
}

.sidenav-main li.active {
    background-color: rgba(255,255,255,0.2) !important;
}

.sidenav-main li.active a {
    color: var(--text-color-light) !important;
}

.brand-logo-container {
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid var(--border-color-light);
    margin-bottom: 20px;
}

.brand-logo-sidenav {
    font-size: 2rem;
    font-weight: 800; /* Bold */
    color: var(--text-color-light);
    letter-spacing: 0.5px;
    text-transform: uppercase; /* Optional: adds to the bold look */
}

/* Mobile Nav */
.nav-mobile {
    display: none;
    background-color: var(--bg-color-sidenav) !important;
}

@media only screen and (max-width : 992px) {
    .nav-mobile {
        display: block;
    }
    body {
        padding-left: 0 !important;
    }
}

/* Authenticated Layout */
.authenticated-body {
    padding-left: var(--nav-width);
}

@media only screen and (max-width : 992px) {
    .authenticated-body {
        padding-left: 0 !important;
    }
}

/* Components */
.card {
    border-radius: 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05) !important;
}

.btn, .btn-large, .btn-small, .btn-flat {
    border-radius: 0 !important;
}

.card-panel {
    border-radius: 0 !important;
}

input, textarea, select {
    border-radius: 0 !important;
}

.collection, .collection-item {
    border-radius: 0 !important;
}

.btn-pro {
    background-color: var(--primary-color) !important;
}

.btn-pro:hover {
    background-color: var(--primary-color-hover) !important;
}

.text-pro {
    color: var(--text-color-main) !important;
}

/* Footer */
.footer-main {
    background-color: var(--bg-color-footer) !important;
}

/* Landing Page */
.landing-page {
    /* Uses inherited theme vars */
}

.landing-page h1 {
    margin-top: 0;
}

.pulse {
    animation: pulse-animation 2s infinite;
}

@keyframes pulse-animation {
    0% {
        box-shadow: 0 0 0 0 rgba(26, 35, 126, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(26, 35, 126, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(26, 35, 126, 0);
    }
}