/* BASE */
body {
    margin: 0;
    font-family: 'Inter', Arial, sans-serif;
    background: #0f172a;
    color: #e2e8f0;
    overflow: hidden; /* app-like feel */
}

/* LAYOUT */
.layout {
    display: none; /* hidden before login */
    height: 100vh;
}

/* AFTER LOGIN */
.layout.active {
    display: flex;
}

/* SIDEBAR */
.sidebar {
    width: 240px;
    min-width: 240px;
    height: 100vh;
    background: #020617;
    padding: 25px 20px;
    border-right: 1px solid #1e293b;
}

.sidebar h2 {
    margin-bottom: 25px;
    color: #38bdf8;
}

.sidebar ul {
    list-style: none;
    padding: 0;
}

.sidebar li {
    padding: 12px 14px;
    margin-bottom: 10px;
    cursor: pointer;
    border-radius: 8px;
    transition: 0.2s;
    color: #cbd5f5;
}

.sidebar li:hover {
    background: #1e293b;
    transform: translateX(5px);
}

/* MAIN */
.main {
    flex: 1;
    padding: 40px;
    overflow-y: auto;
}

/* HEADINGS */
h1 {
    font-size: 26px;
    margin-bottom: 5px;
}

h2 {
    margin-bottom: 20px;
    font-size: 20px;
    color: #38bdf8;
}

/* GRID */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
}

/* CARD */
.card {
    background: rgba(255, 255, 255, 0.03);
    padding: 20px;
    border-radius: 14px;
    border: 1px solid #1e293b;
    transition: 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.4);
}

/* INPUT */
input, select {
    width: 100%;
    padding: 12px;
    margin-top: 10px;
    border-radius: 8px;
    border: none;
    background: #1e293b;
    color: white;
    outline: none;
}

input:focus, select:focus {
    border: 1px solid #38bdf8;
}

/* BUTTON (SMALL + CLEAN) */
button {
    margin-top: 12px;
    padding: 6px 10px;
    font-size: 12px;
    width: auto;
    border-radius: 8px;
    border: none;
    background: linear-gradient(135deg, #38bdf8, #0ea5e9);
    color: black;
    font-weight: bold;
    cursor: pointer;
    transition: 0.2s;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(56,189,248,0.4);
}

/* ICON BUTTON */
.icon-btn {
    padding: 4px 8px;
    font-size: 14px;
    background: #1e293b;
    color: #38bdf8;
}

.icon-btn:hover {
    background: #38bdf8;
    color: black;
}

/* RESULT BOX */
.result {
    margin-top: 12px;
    background: #1e293b;
    padding: 12px;
    border-radius: 8px;
    font-size: 14px;
}

/* PAGE */
.page {
    margin-top: 30px;
}

/* HIDDEN */
.hidden {
    display: none;
}

/* LOGIN */
.login-container {
    position: fixed;
    inset: 0;
    background: #020617;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

/* LOGIN INPUT */
.login-container input {
    width: 250px;
}

/* LOGIN BUTTON */
.login-container button {
    width: 250px;
}

/* CONTACT PAGE */
#contactPage .card {
    max-width: 400px;
}

#contactPage input {
    margin-bottom: 10px;
}

/* TABLE STYLE (Expenses upgrade ready) */
table {
    border-collapse: collapse;
    width: 100%;
}

th {
    background: #1e293b;
    color: #38bdf8;
    padding: 10px;
}

td {
    background: #020617;
    padding: 10px;
    border-bottom: 1px solid #1e293b;
}

/* CANVAS (charts spacing) */
canvas {
    margin-top: 20px;
    max-width: 100%;
}