@import url('https://fonts.googleapis.com/css2?family=Kanit:wght@300;400;500;600;700&display=swap');

:root {
    /* Blue Ocean Gradient Palette */
    --dp-deep-blue: #001233;
    --dp-ocean-blue: #023e8a;
    --dp-mid-blue: #0077b6;
    --dp-sky-blue: #0096c7;
    --dp-light-blue: #00b4d8;
    
    /* Light Theme Variables */
    --dp-bg-light: #f0f8ff;
    --dp-text-main: #1a2b3c;
    --dp-text-content: #4a5568;
    --dp-card-bg: rgba(255, 255, 255, 0.95);
    --dp-card-border: rgba(0, 150, 199, 0.1);
    --dp-list-bg: #f8fbff;
    --dp-list-border: #eef4f8;
    --dp-group-card-bg: #ffffff;
    --dp-group-card-border: #e2e8f0;
    --dp-task-border: #cbd5e1;
    --dp-highlight-box-bg: rgba(0, 150, 199, 0.05);
}

[data-theme="dark"] {
    /* Adjust Blues for Dark Mode Contrast */
    --dp-deep-blue: #023e8a;
    --dp-ocean-blue: #00b4d8;
    --dp-mid-blue: #0096c7;
    --dp-sky-blue: #0077b6;
    --dp-light-blue: #48cae4;
    
    /* Dark Theme Variables */
    --dp-bg-light: #0f172a;
    --dp-text-main: #f1f5f9;
    --dp-text-content: #cbd5e1;
    --dp-card-bg: rgba(30, 41, 59, 0.95);
    --dp-card-border: rgba(255, 255, 255, 0.1);
    --dp-list-bg: #1e293b;
    --dp-list-border: #334155;
    --dp-group-card-bg: #1e293b;
    --dp-group-card-border: #334155;
    --dp-task-border: #475569;
    --dp-highlight-box-bg: rgba(0, 180, 216, 0.1);
}

body {
    font-family: 'Kanit', sans-serif;
    background-color: var(--dp-bg-light);
    background-image: radial-gradient(at 0% 0%, hsla(203, 89%, 41%, 0.05) 0px, transparent 50%),
                      radial-gradient(at 100% 0%, hsla(190, 100%, 42%, 0.05) 0px, transparent 50%);
    color: var(--dp-text-main);
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}


.dp-header-banner {
    position: relative;
    padding-top: 150px; 
    padding-bottom: 7rem; 
    background: linear-gradient(135deg, var(--dp-deep-blue) 0%, var(--dp-ocean-blue) 40%, var(--dp-mid-blue) 80%, var(--dp-sky-blue) 100%);
    color: white;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    border-bottom-left-radius: 50px;
    border-bottom-right-radius: 50px;
    margin-bottom: -50px;
}

.dp-main-title {
    font-weight: 700;
    font-size: 3rem;
    text-shadow: 0 4px 15px rgba(0,0,0,0.3);
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
}

.dp-sub-title {
    font-weight: 300;
    font-size: 1.5rem;
    opacity: 0.9;
    letter-spacing: 2px;
}


.premium-card {
    background: var(--dp-card-bg);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    border: 1px solid var(--dp-card-border);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.05);
    padding: 3rem;
    margin-bottom: 2.5rem;
    transition: transform 0.4s ease, box-shadow 0.4s ease, background 0.3s ease, border 0.3s ease;
    position: relative;
    overflow: hidden;
}

[data-theme="dark"] .premium-card {
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
}

.premium-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .premium-card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.premium-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 6px;
    height: 100%;
    background: linear-gradient(to bottom, var(--dp-ocean-blue), var(--dp-light-blue));
    border-radius: 20px 0 0 20px;
}

.section-icon-wrapper {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 65px;
    height: 65px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--dp-ocean-blue), var(--dp-sky-blue));
    color: white;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 10px 20px rgba(0, 150, 199, 0.25);
}

.card-title-premium {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--dp-ocean-blue);
    margin-bottom: 1.5rem;
}

.text-content {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--dp-text-content);
    text-align: justify;
}


.highlight-box {
    padding: 1.5rem;
    margin-top: 1rem;
    margin-bottom: 1rem;
    border-radius: 0.375rem;
    background: var(--dp-highlight-box-bg) !important;
    border-left: 4px solid var(--dp-ocean-blue) !important;
}


.highlight-text {
    color: var(--dp-ocean-blue);
    font-weight: 500;
}

.duty-list {
    list-style: none;
    padding-left: 0;
}
.duty-list li {
    position: relative;
    padding-left: 4rem;
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--dp-text-content);
    background: var(--dp-list-bg);
    padding-top: 1rem;
    padding-bottom: 1rem;
    padding-right: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--dp-list-border);
    transition: background 0.3s ease, border 0.3s ease, color 0.3s ease;
}
.duty-list li .num-badge {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 2.2rem;
    height: 2.2rem;
    background: linear-gradient(135deg, var(--dp-mid-blue), var(--dp-sky-blue));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.1rem;
    box-shadow: 0 4px 10px rgba(0, 150, 199, 0.2);
}


.group-card {
    background: var(--dp-group-card-bg);
    border-radius: 16px;
    padding: 2rem;
    height: 100%;
    box-shadow: 0 10px 25px rgba(0,0,0,0.04);
    border: 1px solid var(--dp-group-card-border);
    border-top: 5px solid var(--dp-sky-blue);
    transition: all 0.3s ease;
}
[data-theme="dark"] .group-card {
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}
.group-card:hover {
    border-top: 5px solid var(--dp-ocean-blue);
    box-shadow: 0 15px 30px rgba(0, 119, 182, 0.1);
}
[data-theme="dark"] .group-card:hover {
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
}

.group-card h4 {
    color: var(--dp-ocean-blue);
    font-weight: 600;
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 12px;
}
.task-list {
    list-style: none;
    padding-left: 0;
    margin: 0;
}
.task-list li {
    padding: 0.7rem 0;
    border-bottom: 1px dashed var(--dp-task-border);
    font-size: 0.95rem;
    color: var(--dp-text-content);
    display: flex;
    gap: 12px;
    align-items: flex-start;
    transition: color 0.3s ease, border-color 0.3s ease;
}
.task-list li:last-child {
    border-bottom: none;
}
.task-list li i {
    color: var(--dp-light-blue);
    margin-top: 4px;
    font-size: 0.85rem;
}


.dp-zoom-wrapper {
    position: relative;
    cursor: zoom-in;
    border-radius: 15px;
    overflow: hidden;
    display: inline-block;
}
.hover-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 18, 51, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    color: white;
    font-size: 1.2rem;
    font-weight: 500;
}
.dp-zoom-wrapper:hover .hover-overlay {
    opacity: 1;
}

/* Scroll to Top */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: linear-gradient(135deg, var(--dp-ocean-blue), var(--dp-sky-blue));
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    box-shadow: 0 5px 15px rgba(0,0,0,0.25);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}
.scroll-to-top.show {
    opacity: 1;
    visibility: visible;
}
.scroll-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
}