* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}
.container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 40px;
    max-width: 600px;
    width: 100%;
}
h1 {
    text-align: center;
    color: #2d3436;
    margin-bottom: 30px;
    font-size: 2em;
}
h2 {
    color: #2d3436;
    font-size: 1.3em;
    margin-bottom: 12px;
}
/* INPUT & CALCULATOR SECTION (TOP) */
.input-section {
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 2px solid #ecf0f1;
}
.input-group {
    margin-bottom: 20px;
}
label {
    display: block;
    margin-bottom: 8px;
    color: #2d3436;
    font-weight: bold;
    font-size: 1.1em;
}
input {
    width: 100%;
    padding: 12px;
    border: 2px solid #bdc3c7;
    border-radius: 8px;
    font-size: 1em;
    transition: border-color 0.3s;
}
input:focus {
    outline: none;
    border-color: #667eea;
}
.btn-calculate {
    width: 100%;
    padding: 15px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
}
.btn-calculate:hover {
    background: #5568d3;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}
.btn-calculate:active {
    transform: translateY(0);
}
/* RESULT SECTION (BELOW CALCULATOR) */
.result-section {
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 2px solid #ecf0f1;
}
.result-box {
    padding: 25px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s;
}
.result-label {
    color: rgb(255, 255, 255);
    font-size: 1.2em;
    margin-bottom: 10px;
}
.result-value {
    font-size: 2.5em;
    font-weight: bold;
    color: rgb(255, 255, 255);
    margin-bottom: 10px;
}
.result-warning {
    color: rgb(255, 255, 255);
    font-size: 1.1em;
    margin-top: 10px;
}
/* Color warnings based on heat index */
.aman {
    background: linear-gradient(135deg, #00ff6a 0%, #00ff6a 100%);
}
.peringatan {
    background: linear-gradient(135deg, #f39c12 0%, #d68910 100%);
}
.waspada {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
}
.bahaya {
    background: linear-gradient(135deg, #8e44ad 0%, #6c3483 100%);
}
.ancaman {
    background: linear-gradient(135deg, #2c3e50 0%, #000000 100%);
}
/* DESCRIPTION SECTION - CLEAN BLOCK STYLE */
.description-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.description-block {
    background: #f8f9fa;
    border-left: 4px solid #667eea;
    padding: 20px;
    border-radius: 8px;
    transition: all 0.3s ease;
}
.description-block:hover {
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
    transform: translateX(5px);
}
.description-block p {
    color: #555;
    line-height: 1.6;
    font-size: 0.95em;
}
.description-block strong {
    color: #2d3436;
    font-weight: 600;
}

/* HEAT INFO STYLING */
.heat-info {
    background: white;
    padding: 15px;
    margin-bottom: 12px;
    border-radius: 6px;
    border-left: 3px solid #667eea;
}

.heat-info p:first-child {
    font-weight: 600;
    color: #2d3436;
    margin-bottom: 8px;
    font-size: 1em;
}

.heat-info p:last-child {
    color: #555;
    line-height: 1.6;
    font-size: 0.95em;
    text-align: justify;
}

/* WARNING LIST STYLING */
.warning-list {
    list-style: none;
    margin-top: 15px;
    padding: 0;
}

/* WARNING ITEM COLLAPSIBLE STYLING */
.warning-item {
    padding: 0 !important;
    margin-bottom: 10px !important;
    background: rgb(255, 255, 255) !important;
    border-radius: 6px !important;
    border-left: 3px solid #bdc3c7 !important;
    overflow: hidden;
}

.warning-header {
    padding: 12px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    cursor: pointer;
    transition: background-color 0.3s ease;
    user-select: none;
    gap: 12px;
}

.warning-header:hover {
    background-color: #f0f0f0;
}

.warning-title-desc {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.warning-title {
    font-weight: 600;
    color: #2d3436;
    font-size: 0.95em;
}

.warning-desc {
    color: #555;
    font-size: 0.9em;
    line-height: 1.5;
}

.arrow-toggle {
    font-size: 1.2em;
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-top: 2px;
}

.arrow-toggle.open {
    transform: rotate(90deg);
}

.warning-details {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background-color: #f9f9f9;
}

.warning-details.open {
    max-height: 500px;
}

.warning-details p {
    padding: 15px 12px;
    color: #555;
    line-height: 1.8;
    font-size: 0.95em;
    text-align: justify;
    margin: 0;
}

.warning-safe {
    color: #229954;
    font-weight: bold;
}
.warning-caution {
    color: #f39c12;
    font-weight: bold;
}
.warning-alert {
    color: #e74c3c;
    font-weight: bold;
}
.warning-danger {
    color: #8e44ad;
    font-weight: bold;
}
.warning-critical {
    color: #2c3e50;
    font-weight: bold;
}