/* =========================
   GLOBAL
========================= */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #f4f6f9;
    color: #333;
}

/* =========================
   LOGIN PAGE
========================= */
.login-bg {
    background: linear-gradient(135deg, #2196f3, #9c27b0);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-box {
    width: 360px;
    background: #fff;
    padding: 30px;
    border-radius: 18px;
    text-align: center;
    box-shadow: 0 15px 40px rgba(0,0,0,.3);
}

.logo {
    width: 170px;
    margin-bottom: 10px;
}

.subtitle {
    color: #666;
    margin-bottom: 20px;
}

/* =========================
   FORM ELEMENTS
========================= */
input {
    width: 100%;
    padding: 12px;
    margin: 8px 0;
    border-radius: 8px;
    border: 1px solid #ccc;
    font-size: 14px;
}

input:focus {
    outline: none;
    border-color: #3f51b5;
}

/* =========================
   BUTTONS (SINGLE SOURCE)
========================= */
button,
.btn {
    display: inline-block;
    padding: 12px 18px;
    border: none;
    border-radius: 10px;
    background: linear-gradient(45deg, #03a9f4, #3f51b5);
    color: #fff;
    font-size: 15px;
    cursor: pointer;
    transition: opacity .2s ease;
    text-align: center;
    text-decoration: none;
}

button:hover,
.btn:hover {
    opacity: 0.9;
}

/* =========================
   TOP BAR
========================= */
.topbar {
    background: #3f51b5;
    color: white;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-small {
    width: 120px;
}

.logout {
    color: white;
    text-decoration: none;
    font-weight: 500;
}

/* =========================
   DASHBOARD CARDS
========================= */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    padding: 30px;
}

.card {
    padding: 30px;
    border-radius: 18px;
    color: white;
    font-size: 20px;
    text-decoration: none;
    box-shadow: 0 10px 30px rgba(0,0,0,.2);
}

/* Card Colors */
.blue    { background: linear-gradient(45deg, #2196f3, #21cbf3); }
.green   { background: linear-gradient(45deg, #4caf50, #8bc34a); }
.purple  { background: linear-gradient(45deg, #9c27b0, #e040fb); }
.orange  { background: linear-gradient(45deg, #ff9800, #ffb74d); }
.red     { background: linear-gradient(45deg, #f44336, #e57373); }

/* =========================
   CONTENT AREA
========================= */
.container {
    padding: 30px;
}

/* =========================
   FORM CARD (Entries, Shortage)
========================= */
.form-card {
    background: white;
    padding: 20px;
    border-radius: 16px;
    margin-bottom: 25px;
    box-shadow: 0 8px 20px rgba(0,0,0,.15);
}

.form-card h3 {
    margin-top: 0;
}

/* =========================
   TABLES
========================= */
table {
    width: 100%;
    background: white;
    border-radius: 14px;
    overflow: hidden;
    border-collapse: collapse;
}

th {
    background: #3f51b5;
    color: white;
    padding: 12px;
    text-align: left;
}

td {
    padding: 10px;
    border-bottom: 1px solid #eee;
}

tr:hover td {
    background: #f5f7fb;
}

/* =========================
   AI DASHBOARD
========================= */
.ai-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
    padding: 30px;
}

.ai {
    padding: 30px;
    border-radius: 22px;
    color: white;
    font-size: 22px;
    box-shadow: 0 15px 40px rgba(0,0,0,.25);
}

.ai span {
    font-size: 38px;
    font-weight: bold;
    display: block;
    margin-top: 10px;
}

/* AI Colors */
.ai.orange { background: linear-gradient(45deg, #ff9800, #ff5722); }
.ai.blue   { background: linear-gradient(45deg, #2196f3, #21cbf3); }
.ai.green  { background: linear-gradient(45deg, #4caf50, #8bc34a); }
.ai.purple { background: linear-gradient(45deg, #9c27b0, #e040fb); }