/* ไฟล์ CSS หลักสำหรับระบบลงทะเบียนชุมนุม */

/* --- ปรับธีมสีหลักเป็นเขียว-เหลือง และเพิ่มความสวยงาม --- */
:root {
    --primary-green: #43a047;
    --primary-yellow: #ffd600;
    --primary-gradient: linear-gradient(90deg, #43a047 0%, #ffd600 100%);
    --secondary-bg: #f9fbe7;
    --card-shadow: 0 6px 18px rgba(67,160,71,0.12);
    --footer-bg: #388e3c;
    --footer-text: #fffde7;
    --toast-bg: #ffd600;
    --toast-text: #333;
    --loader-bg: rgba(67,160,71,0.1);
    --dark-bg: #222;
    --dark-card: #333;
    --dark-text: #fffde7;
}

/* ตั้งค่าทั่วไป */
body {
    font-family: 'Sarabun', 'Prompt', sans-serif;
    background: var(--secondary-bg);
    color: #333;
    transition: background 0.3s, color 0.3s;
}

body.dark-mode {
    background: var(--dark-bg);
    color: var(--dark-text);
}

/* ส่วนหัว */
.navbar {
    background: #388e3c !important;
    box-shadow: 0 2px 8px rgba(67,160,71,0.08);
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
    min-height: unset;
}

.navbar .navbar-brand, .navbar .nav-link {
    color: #fffde7 !important;
    text-shadow: 0 1px 2px rgba(0,0,0,0.15);
}

.navbar .nav-link.active, .navbar .nav-link:focus, .navbar .nav-link:hover {
    color: #ffd600 !important;
}

/* ส่วนเนื้อหา */
.container {
    max-width: 1140px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 24px;
    padding-right: 24px;
}

@media (max-width: 1200px) {
    .container { max-width: 960px; }
}
@media (max-width: 992px) {
    .container { max-width: 720px; }
}
@media (max-width: 768px) {
    .container { max-width: 100%; padding-left: 8px; padding-right: 8px; }
}

.card {
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    margin-bottom: 24px;
    border: none;
    background: #fff;
    animation: fadeInUp 0.7s;
}

.card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 12px 32px rgba(67,160,71,0.18);
}

.card-header {
    border-radius: 16px 16px 0 0 !important;
    font-weight: bold;
    background: var(--primary-gradient);
    color: #222;
}

/* ปุ่มต่างๆ */
.btn {
    border-radius: 8px;
    padding: 10px 22px;
    font-weight: 600;
    transition: all 0.2s;
    box-shadow: 0 2px 8px rgba(67,160,71,0.08);
}

.btn-primary, .btn-success {
    background: var(--primary-gradient);
    border: none;
    color: #222;
}

.btn-primary:hover, .btn-success:hover {
    background: linear-gradient(90deg, #388e3c 0%, #ffd600 100%);
    color: #222;
    transform: scale(1.04);
}

.btn-outline-primary {
    border: 2px solid var(--primary-green);
    color: var(--primary-green);
    background: #fff;
}

.btn-outline-primary:hover {
    background: var(--primary-gradient);
    color: #222;
}

/* ส่วนท้าย */
footer, footer .container {
    background: #215225 !important;
    color: #fffde7;
    box-shadow: 0 -4px 24px rgba(33,82,37,0.12);
    flex: none !important;
    min-height: unset !important;
    height: auto !important;
    margin-bottom: 0 !important;
    padding-bottom: 1rem !important;
}

footer h5, footer a, footer address, footer p {
    color: #fffde7;
    text-shadow: 0 1px 2px rgba(0,0,0,0.12);
}

footer a:hover {
    color: #ffd600;
}

/* หน้าหลัก */
.jumbotron {
    background: linear-gradient(90deg, #e6ee9c 0%, #fffde7 100%);
    padding: 2.5rem;
    border-radius: 18px;
    margin-bottom: 2.5rem;
    box-shadow: 0 4px 16px rgba(67,160,71,0.08);
}

.feature-icon {
    font-size: 2.7rem;
    color: var(--primary-green);
    margin-bottom: 1rem;
}

/* หน้าลงทะเบียน */
.registration-form, .login-form {
    background: #fff;
    padding: 24px;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
}

/* ตารางข้อมูล */
.table {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

.table th {
    background: #f1f8e9;
}

/* การ์ดชุมนุม */
.club-card {
    height: 100%;
    display: flex;
    flex-direction: column;
    background: #fff;
}

.club-card .card-body {
    flex: 1;
}

.club-capacity {
    height: 7px;
    border-radius: 3.5px;
    margin-top: 10px;
    background: #e6ee9c;
}

.club-capacity-fill {
    height: 100%;
    border-radius: 3.5px;
    background: var(--primary-green);
    transition: width 0.5s;
}

.club-full .club-capacity-fill {
    background: #d32f2f;
}

/* แบดจ์ */
.badge-full {
    background: #d32f2f;
    color: #fff;
}

.badge-available {
    background: var(--primary-green);
    color: #fff;
}

/* ฟอร์มล็อกอิน */
.login-form {
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* การแจ้งเตือน */
.alert {
    border-radius: 10px;
}

/* ปรับแต่งสำหรับอุปกรณ์มือถือ */
@media (max-width: 768px) {
    .container {
        padding-left: 10px;
        padding-right: 10px;
    }
    
    .card {
        margin-bottom: 15px;
    }
    
    .jumbotron {
        padding: 1.2rem;
    }
}

/* Toast Notification */
.toast-custom {
    position: fixed;
    top: 24px;
    right: 24px;
    min-width: 220px;
    background: var(--toast-bg);
    color: var(--toast-text);
    border-radius: 10px;
    box-shadow: 0 4px 16px rgba(67,160,71,0.12);
    z-index: 9999;
    padding: 16px 24px;
    opacity: 0.95;
    font-weight: 600;
    display: none;
}

/* Loader Spinner */
.loader-bg {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--loader-bg);
    z-index: 9998;
    display: flex;
    align-items: center;
    justify-content: center;
    display: none;
}
.loader {
    border: 6px solid #fffde7;
    border-top: 6px solid var(--primary-green);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    animation: spin 1s linear infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Scroll to Top */
#scrollTopBtn {
    position: fixed;
    bottom: 32px;
    right: 32px;
    z-index: 9999;
    background: var(--primary-gradient);
    color: #222;
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    box-shadow: 0 2px 8px rgba(67,160,71,0.18);
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.7rem;
    transition: background 0.2s, transform 0.2s;
}
#scrollTopBtn:hover {
    background: linear-gradient(90deg, #388e3c 0%, #ffd600 100%);
    transform: scale(1.08);
}

/* Dark Mode */
body.dark-mode .card,
body.dark-mode .registration-form,
body.dark-mode .login-form,
body.dark-mode .table {
    background: var(--dark-card);
    color: var(--dark-text);
}
body.dark-mode .card-header,
body.dark-mode .jumbotron {
    background: linear-gradient(90deg, #263238 0%, #ffd600 100%) !important;
    color: #fffde7;
}
body.dark-mode footer {
    background: #222;
    color: #fffde7;
}
body.dark-mode .btn-outline-primary {
    color: #ffd600;
    border-color: #ffd600;
}
body.dark-mode .btn-outline-primary:hover {
    background: var(--primary-gradient);
    color: #222;
}

/* ให้เมนู navbar เรียงแนวนอนเสมอในจอใหญ่ */
.navbar-nav {
    margin-left: 0;
    margin-right: 0;
    padding-left: 0;
    padding-right: 0;
    gap: 1.5rem;
    /* ไม่ต้อง set display: flex; flex-direction: row; align-items: center; */
}
@media (max-width: 991.98px) {
    .navbar-nav {
        gap: 0.5rem;
    }
}