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

:root {
    --bg-color: #0D1B2A;
    --text-color: #E0E1DD;
    --accent-color: #415A77;
    --form-bg: rgba(21, 34, 50, 0.8);
    --gradient-start: #4ECDC4;
    --gradient-end: #45B7D1;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html, body {
    height: 100%;
    overscroll-behavior-y: contain;
}

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #0D1B2A, #1F4287);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    perspective: 1000px;
    overflow-x: hidden;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* New App Title Styles */
.app-title {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 2.5em;
    font-weight: 600;
    text-shadow: 0 4px 6px rgba(0,0,0,0.3);
    letter-spacing: 1px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    z-index: 10;
    text-align: center;
    width: 100%;
    animation: titleGlow 3s infinite alternate;
}

/* Title Glow Animation */
@keyframes titleGlow {
    0% { 
        text-shadow: 0 4px 6px rgba(78,205,196,0.3);
        transform: translateX(-50%) scale(1);
    }
    100% { 
        text-shadow: 0 6px 10px rgba(69,183,209,0.5);
        transform: translateX(-50%) scale(1.02);
    }
}

.star {
    position: absolute;
    background: white;
    border-radius: 50%;
    animation: twinkle 2s infinite alternate;
}

@keyframes twinkle {
    0% { opacity: 0.3; }
    100% { opacity: 1; }
}

.container {
    background: var(--form-bg);
    border-radius: 20px;
    box-shadow: 
        0 15px 35px rgba(0,0,0,0.4), 
        0 5px 15px rgba(0,0,0,0.3);
    padding: 40px;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    transition: all 0.5s ease;
    position: relative;
    display: flex;
    flex-direction: column;
    margin-top: 80px;
    transform: perspective(1000px) rotateX(2deg);
}

.container:hover {
    transform: perspective(1000px) rotateX(0deg) scale(1.02);
    box-shadow: 
        0 20px 40px rgba(0,0,0,0.5), 
        0 10px 20px rgba(0,0,0,0.4);
}

.scrollable-content {
    overflow-y: auto;
    max-height: calc(90vh - 150px);
    padding-right: 10px;
}

.scrollable-content::-webkit-scrollbar {
    width: 6px;
}

.scrollable-content::-webkit-scrollbar-track {
    background: rgba(255,255,255,0.1);
}

.scrollable-content::-webkit-scrollbar-thumb {
    background: var(--accent-color);
    border-radius: 10px;
}

.form-step {
    display: none;
    animation: fadeIn 0.5s ease;
}

.form-step.active {
    display: block;
}

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

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-color);
    font-weight: 300;
    text-transform: uppercase;
    font-size: 0.9em;
}

input, select {
    width: 100%;
    padding: 12px;
    background: rgba(255,255,255,0.1);
    border: 2px solid transparent;
    background-image: 
        linear-gradient(var(--form-bg), var(--form-bg)), 
        linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    background-origin: border-box;
    background-clip: padding-box, border-box;
    border-radius: 10px;
    color: var(--text-color);
    font-family: 'Poppins', sans-serif;
    transition: all 0.3s ease;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

input:focus, select:focus {
    box-shadow: 0 0 15px rgba(78,205,196,0.3);
}

.btn-next, .btn-prev, .btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    margin-top: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-next:hover, .btn-prev:hover, .btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(78,205,196,0.4);
}

.progress {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    background: rgba(255,255,255,0.1);
    padding: 10px;
    border-radius: 15px;
}

.progress-step {
    width: 25px;
    height: 25px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
    position: relative;
}

.progress-step.active {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    transform: scale(1.2);
    box-shadow: 0 4px 10px rgba(78,205,196,0.5);
}

.progress-step.active::after {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 50%;
    opacity: 0.3;
    z-index: -1;
    animation: progressPulse 1.5s infinite alternate;
}

@keyframes progressPulse {
    0% { transform: scale(1); }
    100% { transform: scale(1.1); }
}

#resultContainer, #saranContainer {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--accent-color);
    border-radius: 15px;
    margin-top: 20px;
    padding: 20px;
    color: var(--text-color);
    overflow-y: auto;
    max-height: 50vh;
}

.sleep-emoji {
    font-size: 80px;
    text-align: center;
    margin-bottom: 20px;
    text-shadow: 0 4px 6px rgba(0,0,0,0.3);
}

.saran-item {
    background: rgba(255,255,255,0.1);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 10px;
    border-left: 4px solid var(--gradient-start);
    transition: all 0.3s ease;
}

.saran-item:hover {
    transform: translateX(10px);
    background: rgba(255,255,255,0.15);
}

@media (max-width: 600px) {
    .app-title {
        font-size: 2em;
        top: 10px;
    }

    .container {
        width: 95%;
        padding: 20px;
        max-height: 95vh;
        margin: 10px;
        transform: none;
    }

    .container:hover {
        transform: none;
    }

    .scrollable-content {
        max-height: calc(95vh - 180px);
    }

    .sleep-emoji {
        font-size: 60px;
    }

    #resultContainer, #saranContainer {
        max-height: 60vh;
    }

    .progress-step {
        width: 20px;
        height: 20px;
    }
}

/* Prevent iOS text size adjust */
@media screen and (-webkit-min-device-pixel-ratio:0) {
    select,
    textarea,
    input {
        font-size: 16px;
    }
}