/* =====================================================================
   SkillTapPro IMS — Theme: Deep Navy + Signature Red Gradient
   ===================================================================== */

:root {
    --navy-950: #0a1128;
    --navy-900: #0d1a3d;
    --navy-800: #142a63;
    --navy-700: #1e3a8a;
    --navy-600: #2947a3;

    --red-700: #b91c1c;
    --red-600: #dc2626;
    --red-500: #ef4444;
    --red-400: #f87171;

    --brand-gradient: linear-gradient(120deg, var(--navy-950) 0%, var(--navy-700) 65%, var(--red-600) 130%);
    --brand-gradient-soft: linear-gradient(135deg, var(--navy-800) 0%, var(--navy-700) 100%);
    --cta-gradient: linear-gradient(135deg, var(--navy-700) 0%, var(--red-600) 100%);
    --success-gradient: linear-gradient(135deg, #16a34a 0%, #059669 100%);
    --danger-gradient: linear-gradient(135deg, var(--red-500) 0%, var(--red-700) 100%);

    --bg: #eef1f9;
    --card-bg: #ffffff;
    --text: #1c2333;
    --text-muted: #64748b;
    --border: #e2e6f0;

    --success: #16a34a;
    --warning: #f59e0b;
    --danger: var(--red-600);
    --info: #2563eb;
}

* { box-sizing: border-box; }

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    background: var(--bg);
    padding-bottom: 50px;
    font-size: 16px;
    color: var(--text);
}

/* Navbar */
.navbar {
    background: var(--brand-gradient);
    padding: 0;
    display: flex;
    align-items: center;
    box-shadow: 0 3px 10px rgba(10, 17, 40, 0.25);
}

.navbar .brand {
    padding: 15px 20px;
    color: white;
    font-weight: bold;
    font-size: 1.3em;
    background: rgba(6, 11, 28, 0.55);
    border-right: 3px solid var(--red-500);
    flex-shrink: 0;
}

.navbar a {
    color: rgba(255,255,255,0.88);
    text-decoration: none;
    padding: 15px 20px;
    display: inline-block;
    transition: 0.25s;
    font-size: 16px;
    white-space: nowrap;
}

.navbar a:hover { background: rgba(255,255,255,0.12); color: #fff; }
.navbar a.active {
    background: linear-gradient(135deg, rgba(239,68,68,0.9), rgba(30,58,138,0.9));
    color: white;
    font-weight: bold;
    border-bottom: 4px solid var(--red-400);
}

/* Dropdown menu (used inside navbar.php) */
.dropdown-content { background-color: var(--navy-900) !important; }
.navbar .dropdown-content a:hover { background-color: var(--navy-700) !important; }

/* Layout & Cards */
.container { padding: 20px; max-width: 1200px; margin: auto; }
.card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 3px 14px rgba(15, 23, 42, 0.08);
    margin-bottom: 25px;
    border-top: 3px solid transparent;
    border-image: var(--cta-gradient) 1;
}

/* Grid Systems */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 15px; }

/* Standard Form Elements */
.form-group { margin-bottom: 20px; }

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--navy-800);
    font-size: 15px;
}

input[type="text"],
input[type="number"],
input[type="date"],
input[type="password"],
input[type="email"],
input[type="tel"],
select,
textarea {
    padding: 12px;
    width: 100%;
    box-sizing: border-box;
    border: 1px solid #cbd3e1;
    border-radius: 6px;
    font-size: 16px;
    color: var(--text);
    transition: border 0.3s, box-shadow 0.3s;
    background: #fff;
    height: auto;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--navy-700);
    outline: none;
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.15);
}

/* Filter Box Specifics */
.filter-box input, .filter-box select {
    padding: 8px;
    font-size: 14px;
    margin-bottom: 0;
}
.filter-box label {
    font-size: 13px;
    margin-bottom: 4px;
}

/* Tables */
.table-responsive { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; margin-top: 15px; background: white; font-size: 15px; min-width: 600px; border-radius: 8px; overflow: hidden; }
th, td { padding: 12px 15px; border-bottom: 1px solid var(--border); text-align: left; }
th { background: var(--brand-gradient-soft); color: white; font-weight: 600; }
tr:hover { background-color: #f6f8fd; }

/* Buttons */
.btn {
    padding: 10px 20px;
    background: var(--success-gradient);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    text-align: center;
    display: inline-block;
    transition: filter 0.2s, transform 0.1s;
}
.btn:hover { filter: brightness(1.08); }
.btn:active { transform: translateY(1px); }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-danger { background: var(--danger-gradient); }
.btn-warning { background: var(--warning); }
.btn-primary { background: var(--cta-gradient); }

/* Stats Boxes */
.stat-box { background: linear-gradient(135deg, var(--info), var(--navy-700)); color: white; padding: 20px; border-radius: 8px; }
.stat-box.green { background: var(--success-gradient); }
.stat-box.red { background: var(--danger-gradient); }
.stat-box h3 { margin: 0 0 10px 0; font-size: 1.1em; opacity: 0.9; font-weight: normal; }
.stat-box .val { font-size: 2.2em; font-weight: bold; }

/* --- Mobile Optimization --- */
@media (max-width: 768px) {
    /* Navbar: Horizontal Scroll */
    .navbar {
        flex-direction: row;
        flex-wrap: nowrap;
        overflow-x: auto;
        justify-content: flex-start;
        -webkit-overflow-scrolling: touch;
    }

    .navbar .brand { display: none; }

    .navbar a {
        padding: 15px;
        border-bottom: none;
        flex-shrink: 0;
    }

    /* Grid Stacking */
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    /* Touch Targets */
    input, select, .btn { font-size: 16px; min-height: 44px; }

    /* Padding Adjustments */
    .container { padding: 10px; }
    .card { padding: 15px; }
}