:root {
    --primary: #059669; /* Emerald 600 - Financial primary green */
    --primary-light: #ecfdf5; /* Emerald 50 - For soft backgrounds */
    --secondary: #10b981; /* Emerald 500 */
    --bg-light: #f8fafc;
    --sidebar-bg: #ffffff;
    --text-main: #0f172a; /* Slate 900 */
    --text-muted: #475569; /* Slate 600 */
    --border-color: #cbd5e1; /* Slate 300 */
    --accent: #0284c7; /* Sky 600 Accent */
    --danger: #ef4444; /* Red for expenses */
    --success: #10b981; /* Green for income */
    --nav-width-collapsed: 80px;
    --nav-width-expanded: 260px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-main);
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styling */
.navbar {
    width: var(--nav-width-collapsed);
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 24px 0;
    position: fixed;
    height: 100vh;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
}

.navbar.expanded, .navbar:has(.nav-links:hover) {
    width: var(--nav-width-expanded);
}

.navbar-header {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 0 16px 32px;
    min-height: 60px;
    position: relative;
    overflow: visible;
}

.navbar-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text-main);
    white-space: nowrap;
    transition: opacity 0.2s;
    flex-grow: 1;
}

.brand-name {
    opacity: 0;
    transition: opacity 0.2s;
    pointer-events: none;
}

.navbar.expanded .brand-name, .navbar:has(.nav-links:hover) .brand-name {
    opacity: 1;
    pointer-events: auto;
}

.toggle-sidebar {
    background: var(--primary);
    border: none;
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: absolute;
    right: -14px;
    top: 30px;
    z-index: 1001;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    border: 2px solid white;
}

.navbar.expanded .toggle-sidebar ion-icon {
    transform: rotate(180deg);
}

.toggle-sidebar:hover {
    transform: scale(1.1);
    background-color: #047857;
}

.navbar:not(.expanded):not(:hover) .toggle-sidebar {
    opacity: 0.8;
}

.navbar:hover .toggle-sidebar, .navbar.expanded .toggle-sidebar {
    opacity: 1;
}

.nav-links {
    list-style: none;
    padding: 0;
    margin: 0;
    flex-grow: 1;
    overflow-x: hidden;
    overflow-y: auto;
    padding-bottom: 20px;
}

.nav-links li {
    padding: 4px 12px;
}

.nav-links a {
    display: flex;
    align-items: center;
    padding: 12px;
    text-decoration: none;
    color: var(--text-muted);
    border-radius: 12px;
    transition: all 0.2s;
    font-weight: 500;
    white-space: nowrap;
}

.nav-links a ion-icon {
    font-size: 1.6rem;
    min-width: 32px;
    display: flex;
    justify-content: center;
}

.nav-text {
    margin-left: 12px;
    opacity: 0;
    transition: opacity 0.2s;
}

.navbar.expanded .nav-text, .navbar:has(.nav-links:hover) .nav-text {
    opacity: 1;
}

.nav-links a:hover, .nav-links a.active {
    background-color: var(--primary);
    color: white;
}

.btn-nav-profile {
    margin-top: auto;
    background-color: var(--primary-light) !important;
    color: var(--primary) !important;
}

/* Main Content Area */
.main-content-wrapper {
    flex: 1;
    margin-left: var(--nav-width-collapsed);
    padding: 40px;
    box-sizing: border-box;
    transition: margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 0;
}

body.navbar-expanded .main-content-wrapper {
    margin-left: var(--nav-width-expanded);
}

/* Base Components */
.card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    border: 1px solid var(--border-color);
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* Registration/Login Form */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.input-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-family: inherit;
    box-sizing: border-box;
}

.input-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.2);
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 24px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.green { background: #d1fae5; color: #059669; }
.stat-icon.red { background: #fee2e2; color: #dc2626; }
.stat-icon.blue { background: #e0f2fe; color: #0284c7; }

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .navbar {
        width: 100%;
        height: 100dvh !important;
        top: 0;
        left: 0;
        transform: translateY(-110%);
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1000;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    .navbar.active {
        transform: translateY(0);
    }
    .navbar .brand-name, .navbar .nav-text {
        opacity: 1;
        display: inline;
    }
    .toggle-sidebar {
        display: none;
    }
    .main-content-wrapper {
        margin-left: 0;
        width: 100%;
        padding: 15px;
        padding-top: 75px !important;
    }
    .mobile-top-bar {
        display: flex !important;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        height: 60px;
        background: white;
        box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        z-index: 1001;
        padding: 0 15px;
        align-items: center;
        gap: 15px;
    }
    .mobile-brand {
        font-weight: 800;
        font-size: 1.2rem;
        color: var(--primary);
        text-decoration: none;
    }
    .menu-toggle {
        display: flex;
        font-size: 2rem;
        cursor: pointer;
        padding: 5px;
        color: var(--text-main);
        align-items: center;
        justify-content: center;
    }
    .close-mobile-menu {
        display: flex !important;
        background: none;
        border: none;
        font-size: 1.8rem;
        color: var(--text-main);
        cursor: pointer;
        padding: 5px;
    }
}

.mobile-top-bar { display: none; }
.close-mobile-menu { display: none; }

@media (min-width: 769px) {
    .menu-toggle {
        display: none;
    }
}