/* index/style.css */

/* =========================================
   โทนสีและตัวแปร (Color Palette)
========================================= */
:root {
    --primary-dark: #064e3b;   /* Emerald 900 - เขียวเข้มจัด (อ่านง่ายขึ้น) */
    --primary-main: #059669;   /* Emerald 600 - เขียวเข้มกำลังดี (ตัวอักษรขาวชัดขึ้น) */
    --primary-light: #a7f3d0;  /* Emerald 200 - เขียวอ่อนแบบมีสีสัน (พื้นหลังการ์ด) */
    --bg-color: #f0fdf4;       /* Green 50 - ขาวอมเขียวสว่างใส */
    --text-dark: #1f2937;      /* Slate 800 - เทาเข้มอมน้ำเงิน */
    --text-muted: #6b7280;     /* Slate 500 - เทากลาง */
    --white: #ffffff;          /* ขาว (พื้นหลังการ์ด) */
    --border-color: #34d399;   /* Emerald 400 - สีขอบที่ชัดเจนขึ้น */
    --danger: #ef4444;         /* Red 500 - แดงสดเด่นชัด */
    --shadow: 0 10px 25px rgba(16, 185, 129, 0.15); /* เงาฟุ้งกระจายสวยงาม */
    --radius: 16px;            /* ความโค้งมนที่ดูทันสมัยขึ้น */
}

/* =========================================
   Reset & Base Styles
========================================= */
/* รีเซ็ตขอบหน้าจอเริ่มต้นของเบราว์เซอร์ */
html, body {
    margin: 0; padding: 0;
    width: 100%; height: 100%;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-dark);
}

/* ให้ทุก element นับรวม padding และ border ในขนาด width/height เสมอ */
*, *:before, *:after { box-sizing: border-box; }

body {
    display: flex;
    flex-direction: row; /* ค่าเริ่มต้นบน PC เป็นแนวนอน */
    overflow: hidden; /* ป้องกันไม่ให้หน้าจอหลักเลื่อนทะลุ */
}

h2, h3, h4 { color: var(--primary-dark); margin-top: 0; }

/* =========================================
   Layout: Header & Sidebar
========================================= */
.mobile-header {
    display: none; /* ซ่อนไว้ในหน้าจอ PC */
    background: linear-gradient(90deg, var(--primary-dark) 0%, var(--primary-main) 100%);
    color: var(--white);
    padding: 15px 20px;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    margin: 0; 
    z-index: 1000;
    box-shadow: var(--shadow);
}

.hamburger-btn {
    background: none; border: none; color: var(--white);
    font-size: 1.5em; cursor: pointer; padding: 0;
}

.sidebar {
    width: 260px;
    background: linear-gradient(180deg, var(--primary-dark) 0%, var(--primary-main) 100%);
    color: var(--white);
    height: 100vh;
    padding: 20px;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1001;
    overflow-y: auto;
    box-shadow: 4px 0 10px rgba(0,0,0,0.1);
}

.sidebar hr { border-color: rgba(255,255,255,0.1); margin: 20px 0; }

.sidebar a {
    color: rgba(255,255,255,0.8);
    display: block; padding: 12px 15px;
    text-decoration: none; cursor: pointer;
    border-radius: 8px; transition: all 0.2s;
    margin-bottom: 5px;
}

.sidebar a:hover {
    background: rgba(255,255,255,0.1);
    color: var(--white);
}

/* ฉากหลังสีดำตอนเปิดเมนูบนมือถือ */
.sidebar-overlay {
    display: none; position: fixed; top: 0; left: 0;
    width: 100%; height: 100%; background: rgba(0, 0, 0, 0.5);
    z-index: 1000; backdrop-filter: blur(2px);
}

/* =========================================
   พื้นที่แสดงเนื้อหาหลัก (Main Content & Cards)
========================================= */
.main-content {
    flex: 1; padding: 30px;
    overflow-y: auto; height: 100vh;
}

.section-page { display: none; animation: fadeIn 0.4s ease; }
.section-page.active { display: block; }

@keyframes fadeIn { 
    from { opacity: 0; transform: translateY(10px); } 
    to { opacity: 1; transform: translateY(0); } 
}

/* การ์ดทั่วไป (กล่องสีขาว) */
.card {
    background: var(--white);
    padding: 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    margin-bottom: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(16, 185, 129, 0.2);
}

/* =========================================
   Project Tabs (เมนูย่อยแนวนอน)
========================================= */
.project-tabs {
    display: none; gap: 10px; margin-bottom: 25px;
    padding-bottom: 15px; overflow-x: auto; white-space: nowrap;
    -ms-overflow-style: none; scrollbar-width: none;
}
.project-tabs::-webkit-scrollbar { display: none; }

.btn-tab {
    background: var(--white); border: 1px solid var(--border-color);
    padding: 10px 20px; font-size: 0.95em; font-weight: 600;
    cursor: pointer; color: var(--primary-main);
    border-radius: 30px; transition: all 0.2s;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}
.btn-tab:hover { background: var(--primary-light); }
.btn-tab.active { 
    background: linear-gradient(135deg, var(--primary-main) 0%, #34d399 100%); 
    color: var(--white); 
    border-color: transparent; 
    box-shadow: 0 6px 12px rgba(16, 185, 129, 0.3); 
}

/* =========================================
   IoT Accordion & UI
========================================= */
.iot-accordion {
    background: var(--white);
    padding: 15px 20px;
    border-radius: var(--radius);
    margin-bottom: 15px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}
.iot-accordion:hover { border-color: var(--primary-main); }
.iot-accordion summary {
    font-weight: bold; cursor: pointer; font-size: 1.1em;
    color: var(--primary-dark); outline: none; list-style: none;
    display: flex; justify-content: space-between; align-items: center;
}
.iot-accordion summary::-webkit-details-marker { display:none; }
.iot-accordion summary::after { content: "▼"; font-size: 0.8em; color: var(--primary-main); transition: transform 0.3s; }
.iot-accordion[open] summary::after { transform: rotate(180deg); }

.iot-accordion-content { margin-top: 15px; padding-top: 15px; border-top: 1px solid var(--border-color); }

/* กล่องย่อยด้านใน */
.sub-box {
    border: 1px solid var(--border-color);
    padding: 15px; border-radius: 8px; margin-bottom: 15px;
    background: #fafdfa;
}

/* =========================================
   Forms & Buttons
========================================= */
input[type="text"], input[type="number"], select {
    width: 100%; padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px; outline: none; transition: border 0.2s;
    font-family: inherit;
}
input:focus, select:focus { border-color: var(--primary-main); box-shadow: 0 0 0 3px rgba(45,106,79,0.1); }

.form-group { margin-bottom: 15px; }
.form-group label { display: block; margin-bottom: 5px; font-weight: bold; color: var(--text-dark); }

.hidden-option { display: none; margin-left: 20px; margin-top: 10px; border-left: 3px solid var(--primary-main); padding-left: 15px; }

.btn-primary { padding: 10px 20px; background: var(--primary-main); color: var(--white); border: none; border-radius: 8px; cursor: pointer; transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1); font-weight: bold; box-shadow: 0 4px 6px rgba(16, 185, 129, 0.2); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 12px rgba(16, 185, 129, 0.3); }

.btn-success { padding: 10px 20px; background: #059669; color: var(--white); border: none; border-radius: 8px; cursor: pointer; transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1); font-weight: bold; box-shadow: 0 4px 6px rgba(5, 150, 105, 0.2); }
.btn-success:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 12px rgba(5, 150, 105, 0.3); }

.btn-danger { padding: 10px 20px; background: var(--danger); color: var(--white); border: none; border-radius: 8px; cursor: pointer; font-weight: bold; transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1); box-shadow: 0 4px 6px rgba(239, 68, 68, 0.2); }
.btn-danger:hover { background: #dc2626; transform: translateY(-2px); box-shadow: 0 6px 12px rgba(239, 68, 68, 0.3); }

/* Status Badge */
.status-badge { font-size: 0.6em; padding: 5px 12px; border-radius: 20px; color: var(--white); font-weight: normal; vertical-align: middle; margin-left: 10px;}

/* =========================================
   Modal (หน้าต่างป๊อปอัพ สร้างโปรเจค)
========================================= */
.modal {
    display: none; position: fixed; top: 0; left: 0;
    width: 100%; height: 100%; background: rgba(0, 0, 0, 0.5);
    justify-content: center; align-items: center; z-index: 1050;
}

.modal-content {
    background: var(--white); padding: 25px; border-radius: var(--radius);
    width: 450px; max-width: 90%;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    animation: slideDown 0.3s ease forwards;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.modal-content h3 { margin-top: 0; margin-bottom: 20px; color: var(--primary-dark); }

/* =========================================
   Responsive (Mobile < 768px)
========================================= */
@media (max-width: 768px) {
    body { flex-direction: column; }
    
    .mobile-header { display: flex; }
    
    .sidebar {
        position: fixed; top: 0; left: 0;
        transform: translateX(-100%); height: 100vh; width: 260px;
    }
    .sidebar.open { transform: translateX(0); }
    .sidebar-overlay.active { display: block; }
    
    .main-content { height: calc(100vh - 60px); padding: 15px; }
    
    .header-actions { flex-direction: column; gap: 15px; align-items: stretch !important; }
    .btn-success { width: 100%; }
    
    #projectContainer { grid-template-columns: 1fr; /* มือถือเรียง 1 แถว */ }
    
    /* ควบคุมฟอร์มให้เรียงแนวตั้งบนมือถือ */
    .flex-mobile-col { display: flex; flex-direction: column; gap: 10px; }
    .flex-mobile-col input, .flex-mobile-col button { width: 100%; }
}