:root {
    --primary-color: #ff8fa3;
    --secondary-color: #ffb3c1;
    --accent-color: #c2185b;
    --bg-color: #fff0f3;
    --text-color: #4a4a4a;
    --white: #ffffff;
    
    /* Category Specific Colors */
    --anniversary-accent: #ef476f; /* Rose Pink */
    --countdown-accent: #f78c6b;   /* Sunset Coral */
    --clock-accent: #8e7dbe;       /* Soft Lavender */
    --weather-accent: #4cc9f0;     /* Sky Blue */
}

body {
    font-family: 'Noto Sans KR', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    text-align: center;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

/* Background Decorations */
.background-decor {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(50px);
    opacity: 0.5;
}

.circle-1 {
    width: 300px;
    height: 300px;
    background: var(--primary-color);
    top: -50px;
    left: -50px;
}

.circle-2 {
    width: 250px;
    height: 250px;
    background: var(--secondary-color);
    bottom: 10%;
    right: -50px;
}

.heart-float {
    position: absolute;
    font-size: 2rem;
    top: 20%;
    left: 10%;
    animation: float 6s ease-in-out infinite;
    opacity: 0.6;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(10deg); }
}

header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 60px 20px;
    color: white;
    border-bottom-left-radius: 50% 20px;
    border-bottom-right-radius: 50% 20px;
    box-shadow: 0 4px 15px rgba(255, 143, 163, 0.3);
    position: relative;
}

h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 4rem;
    font-weight: 700;
    margin: 0;
    color: white;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.2);
    letter-spacing: -1px;
}

.language-switcher {
    position: absolute;
    top: 20px;
    right: 20px;
}

.language-switcher button {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid white;
    padding: 5px 12px;
    margin-left: 5px;
    border-radius: 20px;
    cursor: pointer;
    backdrop-filter: blur(5px);
    transition: all 0.3s;
}

.language-switcher button:hover {
    background: white;
    color: var(--primary-color);
}

main {
    padding: 40px 20px;
    max-width: 800px;
    margin: 0 auto;
    padding-bottom: 100px;
}

.card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    margin: 30px auto;
    padding: 30px;
    border-radius: 24px;
    box-shadow: 0 10px 30px rgba(255, 143, 163, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.5);
    transition: transform 0.3s;
}

.category h2 {
    font-size: 1.5rem;
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 10px;
    margin-bottom: 25px;
}

/* Category Specific Styles */
#anniversary-section h2 { color: var(--anniversary-accent); border-color: #ffccd5; }
#anniversary-section #days-together { color: var(--anniversary-accent); }
#anniversary-section .settings-btn { color: var(--anniversary-accent); border-color: var(--anniversary-accent); }
#anniversary-section .settings-btn:hover { background-color: var(--anniversary-accent); color: white; }

#countdown-section h2 { color: var(--countdown-accent); border-color: #ffe5d9; }
#countdown-section #countdown-timer { color: var(--countdown-accent); }
#countdown-section .settings-btn { color: var(--countdown-accent); border-color: var(--countdown-accent); }
#countdown-section .settings-btn:hover { background-color: var(--countdown-accent); color: white; }

#world-clock-section h2 { color: var(--clock-accent); border-color: #e2cfea; }
#world-clock-section .time-display { color: var(--clock-accent); }
#world-clock-section .settings-btn { color: var(--clock-accent); border-color: var(--clock-accent); }
#world-clock-section .settings-btn:hover { background-color: var(--clock-accent); color: white; }

#weather-section h2 { color: var(--weather-accent); border-color: #caf0f8; }
#weather-section .temp { color: var(--weather-accent); font-size: 2rem; font-weight: 900; }
#weather-section .desc { color: var(--weather-accent); font-size: 1rem; margin-top: 5px; }

#days-together, #countdown-timer {
    font-weight: 900;
    font-size: 2.2rem;
    display: block;
    margin: 10px 0;
}

/* Container Layouts */
.clock-container, .weather-container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    margin: 20px 0;
}

.clock-box h3, .weather-box h3 {
    font-size: 0.9rem;
    margin-bottom: 10px;
    opacity: 0.7;
}

.time-display {
    font-size: 1.8rem;
    font-weight: 700;
    font-family: monospace;
}

.tz-label {
    font-size: 0.8rem;
    opacity: 0.8;
    margin-top: 5px;
    font-weight: 500;
}

.clock-divider, .weather-divider {
    font-size: 1.5rem;
    opacity: 0.5;
}

.weather-update-info {
    font-size: 0.7rem;
    opacity: 0.5;
    margin-top: 20px;
}

/* Settings Forms */
.mini-settings {
    margin-top: 20px;
    border-top: 1px dashed var(--secondary-color);
    padding-top: 15px;
}

.settings-btn {
    background-color: var(--white);
    padding: 8px 20px;
    border-radius: 25px;
    border: 2px solid;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: bold;
    transition: all 0.3s ease;
}

.mini-form {
    background: white;
    padding: 15px;
    border-radius: 12px;
    margin-top: 15px;
    text-align: left;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.05);
}

.input-group {
    margin: 10px 0;
}

.input-group label {
    font-size: 0.85rem;
    font-weight: bold;
    display: block;
    margin-bottom: 5px;
}

.input-group input, .input-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--secondary-color);
    border-radius: 8px;
    box-sizing: border-box;
}

footer {
    padding: 40px 20px;
    color: var(--accent-color);
}

@media (max-width: 600px) {
    h1 { font-size: 2.5rem; }
    .clock-container, .weather-container { flex-direction: column; gap: 20px; }
    .clock-divider, .weather-divider { transform: rotate(90deg); }
}