/* --- UNIFIED THEME & VARIABLES --- */
:root {
    --primary-color: #0d47a1; 
    --auth-gradient: linear-gradient(135deg, #0d47a1 0%, #ffffff 100%);
    --sidebar-gradient: linear-gradient(to bottom, #0d47a1, #1a237e);
    --status-updated-color: #28a745;
    --status-closed-color: #6c757d;
    --status-new-color: #ff9800;
    --danger-color: #dc3545;
    --sidebar-text: #cbd5e1;
    --sidebar-text-hover: #ffffff;
    --sidebar-active-bg: rgba(0, 0, 0, 0.2);
    --content-bg: #f1f5f9;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --text-color-dark: #0f172a;
    --text-color-light: #64748b;
    --font-family: 'Segoe UI', 'Roboto', system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--font-family);
    background-color: var(--content-bg);
    color: var(--text-color-dark);
    -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

/* --- AUTHENTICATION STYLES --- */
#auth-container { 
    display: flex; justify-content: center; align-items: center; min-height: 100vh; padding: 20px; background: var(--auth-gradient); 
}
#login-form-container { 
    background-color: var(--card-bg); padding: 40px; border-radius: 20px; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1); width: 100%; max-width: 420px; text-align: center; 
}
#auth-container h2 { color: var(--text-color-dark); margin-bottom: 30px; font-size: 1.8em; font-weight: 600; }
.form-group { margin-bottom: 25px; text-align: left; position: relative; }
.form-group label { display: block; margin-bottom: 8px; color: var(--text-color-light); font-size: 0.95em; font-weight: 500; }
.form-group .input-icon { position: absolute; left: 15px; top: 41px; color: #999; }
.form-group input { width: 100%; padding: 12px 15px 12px 40px; border: 1px solid var(--border-color); border-radius: 10px; font-size: 1em; }
.auth-button { 
    width: 100%; padding: 15px 20px; border: none; border-radius: 10px; background-color: var(--primary-color); color: var(--card-bg); font-size: 1.1em; font-weight: 600; cursor: pointer; transition: all 0.3s ease; 
}
#auth-error { color: #e74c3c; height: 1.2em; font-size: 0.9em; text-align: center; margin-bottom: 15px; }

/* --- DASHBOARD LAYOUT --- */
.dashboard-layout { display: flex; min-height: 100vh; }
.sidebar { 
    width: 260px; background: var(--sidebar-gradient); color: var(--sidebar-text); display: flex; flex-direction: column; flex-shrink: 0;
}
.sidebar-header { padding: 24px; display: flex; align-items: center; gap: 12px; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
.logo-icon { font-size: 28px; color: #ffffff; } 
.logo-text { font-size: 1.25rem; font-weight: 600; color: var(--sidebar-text-hover); }
.sidebar-nav { flex-grow: 1; padding: 16px 0; }
.nav-link { display: flex; align-items: center; gap: 16px; padding: 14px 24px; color: var(--sidebar-text); text-decoration: none; font-weight: 500; transition: all 0.2s ease; border-left: 4px solid transparent; }
.nav-link i { font-size: 1.1rem; width: 20px; text-align: center; }
.nav-link:hover { background-color: var(--sidebar-active-bg); color: var(--sidebar-text-hover); }
.nav-link.active { background-color: var(--sidebar-active-bg); color: var(--sidebar-text-hover); border-left-color: #ffffff; } 
.sidebar-footer { padding: 24px; margin-top: auto; }
.signout-button { background: none; border: 1px solid rgba(255, 255, 255, 0.2); color: var(--sidebar-text); width: 100%; padding: 12px; border-radius: 8px; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 10px; font-size: 1rem; font-weight: 500; transition: background-color 0.2s; }
.signout-button:hover { background-color: var(--sidebar-active-bg); }

.main-content { flex-grow: 1; background-color: var(--content-bg); padding: 24px 32px; overflow-y: auto; }
.main-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
#page-title { font-size: 1.75rem; font-weight: 700; color: var(--text-color-dark); }
.user-info { display: flex; align-items: center; gap: 12px; font-weight: 600; }
.user-avatar { font-size: 2rem; color: var(--text-color-light); }
.content-view { animation: fadeIn 0.4s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* --- TABLE & CARD STYLES --- */
.table-card, .form-card { background-color: var(--card-bg); border-radius: 12px; box-shadow: 0 2px 4px rgba(0,0,0,0.05); }
.controls-container { padding: 16px 24px; border-bottom: 1px solid var(--border-color); }
#search-box { width: 100%; max-width: 400px; padding: 12px; border-radius: 8px; border: 1px solid var(--border-color); font-size: 1rem; }
.table-container { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; }
.data-table thead {
    background-color: var(--primary-color);
}
.data-table th {
    padding: 16px;
    text-align: left;
    font-weight: 600;
    color: white;
    font-size: 0.8rem;
    text-transform: uppercase;
    white-space: nowrap;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
}
.data-table tbody tr { border-bottom: 1px solid var(--border-color); }
.data-table tbody tr:last-child { border-bottom: none; }
.data-table tbody tr:hover { background-color: #f8fafc; }
.data-table td { padding: 16px; vertical-align: middle; color: var(--text-color-dark); font-size: 0.9rem; }
.status-text {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.8rem;
}
.actions-cell { text-align: right; white-space: nowrap; }
.actions-button { background-color: var(--card-bg); border: 1px solid var(--border-color); color: var(--text-color-light); padding: 8px 12px; border-radius: 6px; cursor: pointer; margin-left: 8px; font-weight: 600; }
.actions-button:hover { background-color: #f8fafc; }
.btn-reopen { color: var(--status-updated-color); }
.empty-message { text-align: center; padding: 40px; color: var(--text-color-light); }
.btn-danger {
    background-color: var(--danger-color);
    color: white;
    border-color: var(--danger-color);
}
.btn-danger:hover { background-color: #c82333; }

/* --- FORM & UPLOAD STYLES --- */
.form-card { padding: 32px; }
.form-card h3 { font-size: 1.25rem; margin-bottom: 24px; border-bottom: 1px solid var(--border-color); padding-bottom: 16px; }
.subtitle { color: var(--text-color-light); margin-top: -16px; margin-bottom: 24px; }
.file-input-wrapper { margin-bottom: 1.5rem; }
#csv-file-input { display: none; }
#file-input-label { display: block; padding: 2rem 1rem; border: 2px dashed var(--border-color); border-radius: 8px; cursor: pointer; color: var(--text-color-light); text-align: center; }
.form-actions { margin-top: 24px; display: flex; align-items: center; gap: 20px; }
.btn-primary { background-color: var(--primary-color); color: white; border: none; padding: 12px 20px; border-radius: 8px; font-size: 0.9rem; font-weight: 600; cursor: pointer; transition: all 0.2s ease; display: inline-flex; align-items: center; gap: 8px; } 

/* --- GENERAL FORM STYLES --- */
.input-group {
    margin-bottom: 1.5rem;
    text-align: left;
}
.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color-light);
}
.input-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: var(--font-family);
    resize: vertical; /* Allows user to resize the box vertically */
}

/* --- MODAL STYLES --- */
.modal-backdrop { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.6); display: flex; justify-content: center; align-items: center; z-index: 1000; }
.modal-content { background-color: white; padding: 32px; border-radius: 12px; box-shadow: 0 5px 15px rgba(0,0,0,0.3); width: 90%; max-width: 500px; }
.modal-content h2 { margin-bottom: 24px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 1rem; margin-top: 24px; }
.btn-secondary { background: none; border: 1px solid var(--border-color); color: var(--text-color-dark); padding: 10px 20px; border-radius: 8px; font-weight: 600; cursor: pointer; }

/* --- BOTTOM NAVIGATION (MOBILE ONLY) --- */
#bottom-nav {
    display: none; 
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--card-bg);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
    padding: 8px 0;
}
.bottom-nav-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex-grow: 1;
    text-decoration: none;
    color: var(--text-color-light);
    padding: 4px 12px;
    font-size: 0.75rem;
    transition: color 0.2s ease;
}
.bottom-nav-link i {
    font-size: 1.25rem;
    margin-bottom: 4px;
}
.bottom-nav-link.active {
    color: var(--primary-color);
}


@media (max-width: 992px) {
    .dashboard-layout { display: block; }
    .sidebar { display: none; }
    #bottom-nav { display: flex; } /* Show bottom nav on mobile */
    .main-content {
        width: 100%;
        padding: 16px;
        padding-bottom: 80px; /* Add padding to prevent overlap with bottom nav */
    }

    /* Responsive Table Styles (Card View) */
    .table-container {
        overflow-x: hidden; /* Hide horizontal scroll on mobile */
    }
    .data-table thead {
        display: none;
    }
    .data-table tr {
        display: block;
        position: relative;
        padding-top: 0.75rem; /* Final thin header height */
        margin-bottom: 1rem;
        border-radius: 8px;
        box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        background-color: var(--card-bg);
        overflow: hidden;
    }
    .data-table tr::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 0.75rem; /* Final thin header height */
        background-color: var(--primary-color);
        border-top-left-radius: 8px; /* Match card border radius */
        border-top-right-radius: 8px; /* Match card border radius */
    }
    .data-table td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        text-align: right;
        padding: 0.8rem 1rem;
        border-bottom: 1px solid var(--border-color);
    }
    .data-table td:last-of-type {
        border-bottom: none;
    }
    .data-table td::before {
        content: attr(data-label);
        font-weight: 500;
        color: var(--text-color-light);
        text-align: left;
        padding-right: 1rem;
    }
    .actions-cell {
        background-color: #f8fafc;
        border-bottom: none;
        display: flex;
        gap: 0.5rem;
        padding: 0.5rem 1rem;
    }
     .actions-cell::before {
        display: none;
    }
    .actions-button {
        margin-left: 0;
        flex-grow: 1;
        text-align: center;
    }
    .status-text {
        font-weight: 600;
    }
}