@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&display=swap');

:root {
    --primary: #8b5cf6;
    --primary-glow: rgba(139, 92, 246, 0.5);
    --secondary: #06b6d4;
    --bg-dark: #0f172a;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-blur: blur(16px);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
}

/* Background Image Layer */
.bg-image {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    object-fit: cover;
    filter: brightness(0.6);
}

/* Animated Gradient Overlay */
.bg-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at 20% 30%, rgba(139, 92, 246, 0.15), transparent 40%),
                radial-gradient(circle at 80% 70%, rgba(6, 182, 212, 0.15), transparent 40%);
    animation: pulseBG 10s ease-infinite alternate;
}

@keyframes pulseBG {
    0% { opacity: 0.5; }
    100% { opacity: 1; }
}

.container {
    width: 100%;
    max-width: 800px;
    padding: 2rem;
    text-align: center;
    z-index: 10;
}

h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 2rem;
    letter-spacing: -1px;
    background: linear-gradient(135deg, #fff 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.timer {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.time-segment {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    padding: 2rem 1rem;
    border-radius: 24px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.time-segment:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.05);
}

.number {
    font-size: 4rem;
    font-weight: 600;
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-main);
    text-shadow: 0 0 20px var(--primary-glow);
}

.label {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    font-weight: 400;
}

.settings {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.input-group {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    padding: 0.75rem;
    border-radius: 16px;
}

input {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    color: white;
    font-family: inherit;
    font-size: 1rem;
    padding: 0.6rem 1rem;
    border-radius: 10px;
    outline: none;
}

input[type="datetime-local"]::-webkit-calendar-picker-indicator {
    filter: invert(1);
    cursor: pointer;
}

button {
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    color: white;
    border: none;
    padding: 0.75rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

button:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.5);
}

/* Celebration Layer */
.celebration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.95);
    display: none;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    z-index: 100;
    backdrop-filter: blur(20px);
}

.celebration h2 {
    font-size: 4rem;
    margin-bottom: 1rem;
}

@media (max-width: 640px) {
    .timer { grid-template-columns: repeat(2, 1fr); }
    h1 { font-size: 2.5rem; }
    .number { font-size: 3rem; }
}