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

body {
    font-family: 'Inter', sans-serif;
    background: radial-gradient(circle at top right, #1e293b, #0f172a);
    color: #f1f5f9;
    margin: 0;
    min-height: 100vh;
    overflow: hidden;
}

#landing-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    height: 100vh;
}

header {
    padding: 30px;
    text-align: center;
    width: 100%;
}

.logo {
    font-size: 24px;
    font-weight: 600;
    letter-spacing: -1px;
}

.logo span {
    color: #38bdf8;
}

.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    text-align: center;
    flex-grow: 1;
}

h1 {
    font-size: 48px;
    margin-bottom: 10px;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

#drop-zone {
    width: 100%;
    max-width: 500px;
    height: 250px;
    margin: 40px 0;
    border: 2px dashed rgba(56, 189, 248, 0.3);
    border-radius: 24px;
    background: rgba(30, 41, 59, 0.5);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

#drop-zone:hover {
    border-color: #38bdf8;
    background: rgba(56, 189, 248, 0.05);
    transform: scale(1.02);
}

.upload-icon {
    font-size: 50px;
    margin-bottom: 15px;
}

.features {
    display: flex;
    gap: 30px;
    margin-top: 50px;
    opacity: 0.7;
}

.feature span {
    color: #38bdf8;
    margin-right: 5px;
}

#viewer-container {
    width: 100%;
    height: 100vh;
    background: #ffffff;
    display: flex;
    flex-direction: column;
}

#viewer {
    width: 100%;
    height: calc(100vh - 80px);
}

.controls {
    height: 80px;
    background: rgba(15, 23, 42, 0.98);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
    box-sizing: border-box;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

#page-info {
    color: #94a3b8;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
}

button {
    padding: 12px 30px;
    cursor: pointer;
    background: linear-gradient(135deg, #007bff, #00c6ff);
    color: white;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 13px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
}

button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 123, 255, 0.5);
}