/* Christmas Greeting Styles */

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

:root {
    --deep-red: #8B0000;
    --festive-red: #D42426;
    --soft-red: #E74C3C;
    --forest-green: #0F5132;
    --pine-green: #1A5F3E;
    --soft-green: #27AE60;
    --snow-white: #FFFAFA;
    --cream: #FFF8DC;
    --gold: #FFD700;
    --silver: #C0C0C0;
    --night-sky: #0A1828;
    --twilight: #1C3144;
}

body {
    font-family: 'Quicksand', sans-serif;
    background: linear-gradient(180deg, var(--night-sky) 0%, var(--twilight) 50%, #2C5F7D 100%);
    color: var(--snow-white);
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

/* Starry background */
.stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.star {
    position: absolute;
    background: white;
    border-radius: 50%;
    animation: twinkle 3s ease-in-out infinite;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.2); }
}

/* Snowflakes */
.snowflake {
    position: fixed;
    top: -10px;
    color: white;
    font-size: 1em;
    user-select: none;
    z-index: 1000;
    pointer-events: none;
    animation: fall linear infinite;
}

@keyframes fall {
    to {
        transform: translateY(100vh) rotate(360deg);
    }
}

/* Main container */
.container {
    position: relative;
    z-index: 2;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

/* Christmas tree decoration */
.tree-container {
    position: relative;
    margin-bottom: 3rem;
    animation: slideDown 1s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tree {
    font-size: 8rem;
    animation: sway 3s ease-in-out infinite;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.3));
}

@keyframes sway {
    0%, 100% { transform: rotate(-2deg); }
    50% { transform: rotate(2deg); }
}

.ornament {
    position: absolute;
    font-size: 1.5rem;
    animation: sparkle 2s ease-in-out infinite;
}

@keyframes sparkle {
    0%, 100% { transform: scale(1) rotate(0deg); opacity: 0.8; }
    50% { transform: scale(1.2) rotate(10deg); opacity: 1; }
}

.ornament:nth-child(2) { top: 20%; left: 35%; animation-delay: 0.2s; }
.ornament:nth-child(3) { top: 35%; right: 30%; animation-delay: 0.4s; }
.ornament:nth-child(4) { top: 50%; left: 25%; animation-delay: 0.6s; }
.ornament:nth-child(5) { top: 50%; right: 20%; animation-delay: 0.8s; }
.ornament:nth-child(6) { top: 65%; left: 35%; animation-delay: 1s; }

/* Greeting card */
.greeting-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0.05) 100%);
    backdrop-filter: blur(10px);
    border-radius: 30px;
    padding: 3rem 4rem;
    text-align: center;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.3),
        inset 0 1px 1px rgba(255, 255, 255, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.2);
    max-width: 700px;
    animation: cardAppear 1s ease-out 0.3s backwards;
    position: relative;
    overflow: hidden;
}

@keyframes cardAppear {
    from {
        opacity: 0;
        transform: scale(0.8) rotateX(30deg);
    }
    to {
        opacity: 1;
        transform: scale(1) rotateX(0deg);
    }
}

.greeting-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 30%,
        rgba(255, 255, 255, 0.1) 50%,
        transparent 70%
    );
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

h1 {
    font-family: 'Mountains of Christmas', cursive;
    font-size: 4rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--gold) 0%, var(--soft-red) 50%, var(--festive-red) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    animation: titleGlow 2s ease-in-out infinite;
    position: relative;
}

@keyframes titleGlow {
    0%, 100% { filter: brightness(1); }
    50% { filter: brightness(1.2); }
}

.message {
    font-size: 1.3rem;
    line-height: 1.8;
    color: var(--cream);
    margin-bottom: 2rem;
    font-weight: 400;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.from {
    font-size: 1.1rem;
    color: var(--gold);
    font-weight: 600;
    font-style: italic;
    margin-top: 2rem;
}

/* Interactive button */
.magic-button {
    background: linear-gradient(135deg, var(--festive-red) 0%, var(--deep-red) 100%);
    color: white;
    border: none;
    padding: 1rem 3rem;
    font-size: 1.2rem;
    font-family: 'Quicksand', sans-serif;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(212, 36, 38, 0.4);
    transition: all 0.3s ease;
    margin-top: 1rem;
    position: relative;
    overflow: hidden;
}

.magic-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.magic-button:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 40px rgba(212, 36, 38, 0.6);
}

.magic-button:hover::before {
    width: 300px;
    height: 300px;
}

.magic-button:active {
    transform: translateY(-1px) scale(1.02);
}

/* Presents decoration */
.presents {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1rem;
    z-index: 1;
    animation: presentsBounce 2s ease-in-out infinite;
}

@keyframes presentsBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-10px); }
}

.present {
    font-size: 3rem;
    filter: drop-shadow(0 5px 15px rgba(0, 0, 0, 0.3));
    animation: rotate 3s ease-in-out infinite;
}

.present:nth-child(2) { animation-delay: 0.5s; }
.present:nth-child(3) { animation-delay: 1s; }

@keyframes rotate {
    0%, 100% { transform: rotate(-5deg); }
    50% { transform: rotate(5deg); }
}

/* Bells */
.bells {
    position: fixed;
    top: 2rem;
    right: 2rem;
    font-size: 3rem;
    animation: ring 1s ease-in-out infinite;
    cursor: pointer;
    filter: drop-shadow(0 5px 10px rgba(0, 0, 0, 0.2));
    z-index: 3;
}

@keyframes ring {
    0%, 100% { transform: rotate(-10deg); }
    50% { transform: rotate(10deg); }
}

.bells:hover {
    animation: ringFast 0.3s ease-in-out infinite;
}

@keyframes ringFast {
    0%, 100% { transform: rotate(-20deg); }
    50% { transform: rotate(20deg); }
}

/* Name input screen */
.name-input-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, var(--night-sky) 0%, var(--twilight) 50%, #2C5F7D 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.name-input-screen.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* Checking screen */
.checking-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, var(--night-sky) 0%, var(--twilight) 50%, #2C5F7D 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.checking-screen.visible {
    opacity: 1;
    visibility: visible;
}

.checking-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0.05) 100%);
    backdrop-filter: blur(10px);
    border-radius: 30px;
    padding: 3rem 4rem;
    text-align: center;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.3),
        inset 0 1px 1px rgba(255, 255, 255, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.2);
    max-width: 600px;
    width: 90%;
}

.santa-icon {
    font-size: 5rem;
    margin-bottom: 1rem;
    animation: santaFloat 2s ease-in-out infinite;
}

@keyframes santaFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.checking-text {
    font-family: 'Mountains of Christmas', cursive;
    font-size: 2rem;
    color: var(--gold);
    margin-bottom: 2rem;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.8; }
    50% { opacity: 1; }
}

.progress-container {
    width: 100%;
    height: 30px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    overflow: hidden;
    margin-bottom: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--festive-red) 0%, var(--gold) 50%, var(--soft-green) 100%);
    border-radius: 15px;
    width: 0%;
    transition: width 0.3s ease;
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shimmerProgress 1s infinite;
}

@keyframes shimmerProgress {
    to {
        left: 100%;
    }
}

.progress-text {
    color: var(--cream);
    font-size: 1.1rem;
    margin-top: 0.5rem;
}

/* Result screen */
.result-card {
    display: none;
}

.result-card.visible {
    display: block;
    animation: resultAppear 0.5s ease-out;
}

@keyframes resultAppear {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.list-badge {
    display: inline-block;
    font-family: 'Mountains of Christmas', cursive;
    font-size: 3.5rem;
    font-weight: 700;
    padding: 1rem 2rem;
    border-radius: 20px;
    margin: 1rem 0;
    animation: badgeBounce 0.6s ease-out;
}

.list-badge.nice {
    background: linear-gradient(135deg, var(--soft-green) 0%, var(--pine-green) 100%);
    color: white;
    box-shadow: 0 10px 30px rgba(39, 174, 96, 0.4);
}

.list-badge.naughty {
    background: linear-gradient(135deg, var(--soft-red) 0%, var(--deep-red) 100%);
    color: white;
    box-shadow: 0 10px 30px rgba(231, 76, 60, 0.4);
}

@keyframes badgeBounce {
    0% { transform: scale(0); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.result-message {
    color: var(--cream);
    font-size: 1.3rem;
    line-height: 1.8;
    margin: 1.5rem 0;
}

.continue-button {
    background: linear-gradient(135deg, var(--gold) 0%, #FFA500 100%);
    color: var(--night-sky);
    border: none;
    padding: 1rem 3rem;
    font-size: 1.2rem;
    font-family: 'Quicksand', sans-serif;
    font-weight: 700;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(255, 215, 0, 0.4);
    transition: all 0.3s ease;
    margin-top: 1rem;
}

.continue-button:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 40px rgba(255, 215, 0, 0.6);
}

.name-input-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0.05) 100%);
    backdrop-filter: blur(10px);
    border-radius: 30px;
    padding: 3rem 4rem;
    text-align: center;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.3),
        inset 0 1px 1px rgba(255, 255, 255, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.2);
    max-width: 500px;
    animation: cardFloat 1s ease-out;
}

@keyframes cardFloat {
    from {
        opacity: 0;
        transform: translateY(50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.name-input-card h2 {
    font-family: 'Mountains of Christmas', cursive;
    font-size: 3rem;
    background: linear-gradient(135deg, var(--gold) 0%, var(--soft-red) 50%, var(--festive-red) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.name-input-card p {
    color: var(--cream);
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.name-input-wrapper {
    position: relative;
    margin-bottom: 2rem;
}

.name-input {
    width: 100%;
    padding: 1rem 1.5rem;
    font-size: 1.3rem;
    font-family: 'Quicksand', sans-serif;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    text-align: center;
    transition: all 0.3s ease;
    outline: none;
}

.name-input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.name-input:focus {
    border-color: var(--gold);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.3);
}

.submit-name-button {
    background: linear-gradient(135deg, var(--festive-red) 0%, var(--deep-red) 100%);
    color: white;
    border: none;
    padding: 1rem 3rem;
    font-size: 1.2rem;
    font-family: 'Quicksand', sans-serif;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(212, 36, 38, 0.4);
    transition: all 0.3s ease;
}

.submit-name-button:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 40px rgba(212, 36, 38, 0.6);
}

.submit-name-button:active {
    transform: translateY(-1px) scale(1.02);
}

.main-content {
    opacity: 0;
    transition: opacity 0.8s ease 0.5s;
}

.main-content.visible {
    opacity: 1;
}

.user-name {
    color: var(--gold);
    font-weight: 700;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

/* Responsive design */
@media (max-width: 768px) {
    .tree {
        font-size: 5rem;
    }

    h1 {
        font-size: 2.5rem;
    }

    .greeting-card {
        padding: 2rem;
    }

    .message {
        font-size: 1.1rem;
    }

    .magic-button {
        padding: 0.8rem 2rem;
        font-size: 1rem;
    }

    .presents {
        gap: 0.5rem;
    }

    .present {
        font-size: 2rem;
    }

    .bells {
        font-size: 2rem;
        top: 1rem;
        right: 1rem;
    }

    .name-input-card {
        padding: 2rem;
        margin: 1rem;
    }

    .name-input-card h2 {
        font-size: 2rem;
    }

    .name-input-card p {
        font-size: 1rem;
    }

    .name-input {
        font-size: 1.1rem;
    }

    .submit-name-button {
        padding: 0.8rem 2rem;
        font-size: 1rem;
    }
}