/* style.css - Refined for Modern Look */

/* --- Google Font --- */
@import url('https://fonts.googleapis.com/css2?family=Sarabun:wght@300;400;500;700&display=swap');

/* --- CSS Variables (ปรับโทนสีและค่าต่างๆ) --- */
:root {
    --primary-color: #007bff;  /* Slightly richer Blue */
    --secondary-color: #17a2b8; /* Info/Teal */
    --accent-color: #6f42c1;   /* Purple */
    --kpi-color: #dc3545;    /* Red */
    --text-color: #212529;   /* Darker Text */
    --text-light: #6c757d;   /* Grey */
    --border-color: #dee2e6; /* Lighter Grey Border */
    --background-light: #f8f9fa; /* Very Light Grey Background */
    --background-body: #f4f6f9; /* Slightly Bluer Body Background */
    --background-card: #ffffff; /* White Card Background */
    --font-family: 'Sarabun', sans-serif;
    --border-radius: 0.375rem; /* Bootstrap-like radius */
    --box-shadow: 0 0.2rem 0.8rem rgba(0, 0, 0, 0.075); /* Softer shadow */
    --box-shadow-hover: 0 0.4rem 1.2rem rgba(0, 0, 0, 0.1);
}

/* --- Base Styles --- */
*, *::before, *::after { box-sizing: border-box; }
body {
    font-family: var(--font-family);
    margin: 0;
    padding: 0;
    background-color: var(--background-body);
    color: var(--text-color);
    line-height: 1.6;
    font-size: 1rem; /* Use rem for better scalability */
}
.main-content { max-width: 1200px; margin: 25px auto; padding: 0 15px; } /* Add horizontal padding */
a { color: var(--primary-color); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: #0056b3; /* Darker primary */ text-decoration: none; } /* Remove underline on hover generally */
h1, h2, h3, h4 { color: var(--text-color); margin-top: 1.5em; margin-bottom: 1em; font-weight: 500; }
h1 { font-size: 2.25rem; font-weight: 700; }
h2 { font-size: 1.75rem; font-weight: 500; padding-bottom: 0.75rem; border-bottom: 1px solid var(--border-color); }
h3 { font-size: 1.4rem; font-weight: 500; }
h4 { font-size: 1.15rem; font-weight: 500; }

/* --- Page Header --- */
.page-header { background-color: var(--background-card); padding: 1rem 1.5rem; margin-bottom: 1.5rem; border-radius: var(--border-radius); box-shadow: var(--box-shadow); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }
.page-title { color: var(--text-color); margin: 0; font-size: 1.75rem; font-weight: 700; display: inline-flex; align-items: center; gap: 10px; }
.page-title i { color: var(--primary-color); }
.back-link-header { font-size: 0.9rem; font-weight: 500; color: var(--primary-color); background-color: #e9ecef; padding: 0.5rem 1rem; border-radius: 50rem; /* Pill shape */ transition: background-color 0.2s ease, color 0.2s ease; }
.back-link-header i { margin-right: 0.3rem; }
.back-link-header:hover { background-color: var(--primary-color); color: #ffffff; text-decoration: none; }

/* --- Content Sections --- */
.content-section { background-color: var(--background-card); padding: 1.5rem 2rem; margin-bottom: 1.5rem; border-radius: var(--border-radius); box-shadow: var(--box-shadow); }
.content-section h2 { margin-top: 0; } /* Remove top margin for heading inside section */
.content-section h2 i, .content-section h3 i { margin-right: 10px; color: #adb5bd; /* Lighter Grey icon */ width: 25px; text-align: center; }
.content-section h2 i { color: var(--primary-color); } /* Specific icons can have primary color */
.content-section h3 { text-align: left; border-bottom: none; margin-bottom: 1rem; font-size: 1.25rem; } /* Adjust h3 style */

/* --- Message Boxes --- */
.message { padding: 1rem 1.25rem; border-radius: var(--border-radius); margin-bottom: 1.5rem; text-align: center; font-size: 0.95em; border: 1px solid transparent; border-left-width: 5px; }
.message p { margin: 0; padding: 0; }
.success { background-color: #d1e7dd; color: #0f5132; border-color: #badbcc; border-left-color: #198754; }
.error { background-color: #f8d7da; color: #842029; border-color: #f5c2c7; border-left-color: var(--kpi-color); text-align: left; }

/* --- Forms & Selectors --- */
.selectors-form { background-color: transparent; /* Remove card look for selectors */ padding: 0; margin-bottom: 1.5rem; box-shadow: none; display: flex; align-items: center; gap: 1rem 1.5rem; /* Row and column gap */ flex-wrap: wrap; }
.selector-group { display: flex; align-items: center; gap: 0.5rem; }
.selectors-form label { font-weight: 500; color: var(--text-color); font-size: 0.9rem; }
.period-select, .year-select, .area-select { padding: 0.4rem 0.8rem; border: 1px solid var(--border-color); border-radius: var(--border-radius); background-color: #fff; font-family: var(--font-family); font-size: 0.9rem; cursor: pointer; min-width: 150px; transition: border-color 0.2s ease, box-shadow 0.2s ease; }
.period-select:focus, .year-select:focus, .area-select:focus { border-color: var(--primary-color); outline: none; box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.2); }

/* --- Index Page Specific Styles --- */
.title-wrapper { text-align: center; margin-bottom: 1.5rem; }
.app-title { border-bottom-color: var(--primary-color); }
.summary-link-section { text-align: center; margin-bottom: 2.5rem; display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }
.summary-link-button { display: inline-flex; align-items: center; color: #ffffff; padding: 0.75rem 1.5rem; border-radius: 50rem; font-size: 1rem; font-weight: 500; text-decoration: none; transition: background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease; box-shadow: 0 0.125rem 0.25rem rgba(0,0,0,0.1); border: none; }
.summary-link-button:hover { transform: translateY(-3px); box-shadow: var(--box-shadow-hover); color: #ffffff; text-decoration: none; }
.summary-link-button i { margin-right: 0.5rem; }
/* Button Colors */
.summary-link-button.yearly { background: linear-gradient(135deg, #28a745, #218838); } /* Green gradient */
.summary-link-button.yearly:hover { background: linear-gradient(135deg, #218838, #1e7e34); }
.summary-link-button.quarterly { background: linear-gradient(135deg, #fd7e14, #e85d04); } /* Orange gradient */
.summary-link-button.quarterly:hover { background: linear-gradient(135deg, #e85d04, #dc3545); }
.summary-link-button.monthly-detail { background: linear-gradient(135deg, #6f42c1, #5a2b9b); } /* Purple gradient */
.summary-link-button.monthly-detail:hover { background: linear-gradient(135deg, #5a2b9b, #4d2380); }

.floor-section { margin-bottom: 2.5rem; padding: 1.75rem; border: none; /* Remove border */ }
.floor-title { font-size: 1.6rem; color: var(--text-color); border-bottom-color: #eee; }
.area-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.75rem; } /* Wider min, more gap */
.area-card { background: linear-gradient(145deg, #ffffff, #f9f9f9); border: 1px solid #f0f0f0; border-radius: var(--border-radius); padding: 2rem 1.25rem; color: var(--text-light); box-shadow: 0 1px 3px rgba(0,0,0,0.05); transition: all 0.3s cubic-bezier(.25,.8,.25,1); min-height: 170px; }
.area-card:hover { transform: translateY(-6px) scale(1.02); box-shadow: var(--box-shadow-hover); border-color: transparent; background: linear-gradient(145deg, #ffffff, #f0f8ff); color: var(--primary-color); }
.area-card::before { display: none; } /* Remove circle effect */
.area-card i { font-size: 3rem; margin-bottom: 1rem; color: var(--primary-color); transition: color 0.3s ease; }
.area-card:hover i { color: var(--primary-color); /* Keep color */ }
.area-name { font-size: 1.1rem; font-weight: 500; color: var(--text-color); }
.area-name span { font-size: 0.8rem; color: var(--text-light); }
.area-card:hover .area-name span { color: var(--text-color); }

/* --- Area Page Styles --- */
.add-entry-form p{ font-weight: 400; margin-bottom: 1rem; color: var(--text-light); }
.button-grid{ gap: 1rem; }
.age-button{ /* Modern Button Style */ padding: 1rem 0.75rem; font-size: 0.95rem; font-weight: 700; /* Bolder */ letter-spacing: 0.5px; text-transform: uppercase; border-radius: var(--border-radius); color: #fff; transition: all .3s ease; box-shadow: 0 4px 6px rgba(0,0,0,.1); border: none; /* Remove border */ border-bottom: 3px solid transparent; /* For 3D effect */ }
/* Dynamic button colors set via PHP/.age-button-KEY */
.age-button:hover{ transform: translateY(-3px); box-shadow: 0 6px 12px rgba(0,0,0,.15); }
.age-button:active{ transform: translateY(-1px); box-shadow: 0 3px 6px rgba(0,0,0,.1); }
.age-button:disabled{ background: #ced4da!important; color: #6c757d!important; cursor:not-allowed; transform:none; box-shadow:none; border-bottom: none; }

/* --- Tables --- */
.table-wrapper{ overflow-x:auto; margin-top:1.5rem; border: 1px solid var(--border-color); border-radius: var(--border-radius); box-shadow: 0 1px 2px rgba(0,0,0,0.05); }
table{ width:100%; border-collapse:collapse; font-size:.9em; background-color: #fff; }
th,td{ border: none; /* Remove cell borders */ border-bottom: 1px solid var(--border-color); padding: 0.9rem 1rem; text-align: center; vertical-align: middle; }
th{ background-color: var(--background-light); color: var(--text-color); font-weight: 500; white-space:nowrap; text-align: center; font-size: 0.9em; }
td{ color: var(--text-color); }
tbody tr { transition: background-color 0.15s ease-in-out; }
tbody tr:hover td { background-color: #f1f8ff; }
tbody tr:last-child td { border-bottom: none; } /* Remove border from last row */
td.month-year-header, td.age-header { text-align:left; font-weight:500; white-space:nowrap;}
td.total, th.total-header{font-weight:700; background-color:#f1f5f8; color:#333}
tr.total-row td{ background-color:#e9edf1!important; border-top:2px solid #bdc3c7; font-weight:700}
/* Monthly Table Separator */
.month-separator td{ display: none; /* Hide separator row, use background instead */ }
tr.month-separator{ height: 0; }
/* Monthly Table Group Backgrounds */
tr.month-group-1 td{} tr.month-group-1:nth-child(even) td{ background-color: #fdfdfd; }
tr.month-group-2 td{ background-color: #f8faff; } tr.month-group-2:nth-child(even) td{ background-color: #f2f6fc; }
tr.month-group-3 td{} tr.month-group-3:nth-child(even) td{ background-color: #fdfdfd; }
/* KPI Table Colors */
td.kpi-value { color: var(--text-light); font-style: normal; font-size: 0.9em;}
td.kpi-diff-met { color: #198754; font-weight: bold; }
td.kpi-diff-not-met { color: var(--kpi-color); font-weight: bold; }
td.kpi-diff-zero { color: var(--text-light); }
/* Daily Table Indicator */
.daily-summary-table td:first-child{ position:relative; padding-left:30px; text-align:left; font-weight:500}
.color-indicator{ display:inline-block; width:12px; height:12px; border-radius:50%; position:absolute; left:10px; top:50%; transform:translateY(-50%); border: 1px solid rgba(0,0,0,.1); }
/* Area/Annual Table Font Size */
.area-breakdown-table th, .area-breakdown-table td,
.annual-summary-table th, .annual-summary-table td { font-size: 0.85em; padding: 0.7rem 0.8rem; }

/* --- Charts --- */
.chart-container{ margin:2rem 0; position:relative; height:400px; width:100%; border:none; padding:0; border-radius: var(--border-radius); box-sizing:border-box; background-color:transparent; } /* Simpler container */
.chart-grid{ display:grid; grid-template-columns:1fr; gap:2rem; margin-top: 1rem;} @media (min-width:992px){.chart-grid{grid-template-columns:repeat(2,1fr)}}
.monthly-charts-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; margin-top: 1rem; }
.monthly-chart-item .chart-container { height: 320px; margin-top: 0.5rem; background-color: var(--background-light); padding: 1rem; border: 1px solid var(--border-color); }
.no-data-message { text-align:center; padding: 3rem 1rem; color:var(--text-light); font-style: italic; background-color: var(--background-light); border-radius: var(--border-radius); margin-top: 1rem;}

/* --- Toast Notification --- */
.toast{position:fixed;bottom:2rem;left:50%;transform:translateX(-50%);padding:0.8rem 1.5rem;border-radius:50rem;background-color:rgba(33,37,41,.9); /* Darker */ color:#fff;font-size:.9rem;font-weight:500;z-index:1050;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease,bottom .3s ease;box-shadow:0 0.25rem 0.75rem rgba(0,0,0,.1)}
.toast.show{opacity:1;visibility:visible;bottom:3rem}
.toast.success{background-color:rgba(25,135,84,.9)} /* Success Green */
.toast.error{background-color:rgba(220,53,69,.9)} /* Error Red */

/* --- Footer Styles --- */
.site-footer { text-align: center; margin-top: 3rem; padding: 2rem 1rem; font-size: 0.9em; color: var(--text-light); border-top: 1px solid var(--border-color); background-color: var(--background-light); }
.site-footer p { margin: 0; }

/* --- Background Styles --- */

/* Default Background for all pages (already exists) */
body {
    font-family: var(--font-family);
    margin: 0;
    padding: 0;
    background-color: var(--background-body); /* << สีพื้นหลังปกติ */
    color: var(--text-color);
    line-height: 1.6;
    font-size: 1rem;
    min-height: 100vh;
}

/* *** Specific Background for Index Page *** */
body.index-page-background {
    /* Example 1: Subtle Gradient */
    background: linear-gradient(135deg, #d1deec 0%, #7c9dbe 70%, #c2e1fb 100%);

    /* Example 2: Abstract Low-Opacity Image (replace 'path/to/your/image.svg' with actual path) */
    /*
    background-color: var(--background-body);
    background-image: url('path/to/your/image.svg');
    background-repeat: no-repeat;
    background-position: top right;
    background-size: cover; // or contain, or specific size
    background-attachment: fixed; // Make background fixed while scrolling
    */

    /* Example 3: Darker Theme Gradient */
    /*
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: #f8f9fa; // Need to adjust text color too if using dark bg
    */
}
/* --- End Background Styles --- */