/* Apple-inspired Dark Theme */
:root {
    --dark-bg: #1c1c1e;
    --darker-bg: #000000;
    --light-text: #ffffff;
    --gray-text: #8e8e93;
    --primary-color: #0a84ff;
    --success-color: #30d158;
    --error-color: #ff453a;
    --card-bg: #2c2c2e;
    --border-color: #38383a;
}

body {
    background-color: var(--dark-bg);
    color: var(--light-text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen-Sans, Ubuntu, Cantarell, sans-serif;
    line-height: 1.5;
    margin: 0;
    padding: 0;
}

/* Smooth Animations */
.smooth-transition {
    transition: all 0.3s ease-in-out;
}

/* Navigation */
.navbar {
    background-color: var(--darker-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

.navbar-brand {
    color: var(--light-text);
    font-weight: 600;
}

/* Cards */
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
}

/* Buttons */
.btn-primary {
    background-color: var(--primary-color);
    border: none;
    border-radius: 8px;
    padding: 10px 20px;
    font-weight: 600;
}

.btn-primary:hover {
    opacity: 0.9;
    transform: scale(1.02);
}

/* Forms */
.form-control {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--light-text);
    border-radius: 8px;
    padding: 12px;
}

.form-control:focus {
    background-color: var(--card-bg);
    border-color: var(--primary-color);
    box-shadow: none;
    color: var(--light-text);
}

/* Messages */
.message-unread {
    background-color: rgba(10, 132, 255, 0.1);
    border-left: 3px solid var(--primary-color);
}

/* Profile */
.profile-picture {
    width: 150px;
    height: 150px;
    border-radius: 75px;
    object-fit: cover;
}

/* Search Results */
.search-result {
    transition: transform 0.2s ease;
}

.search-result:hover {
    transform: translateY(-2px);
}

/* Availability Indicators */
.available {
    color: var(--success-color);
}

.unavailable {
    color: var(--error-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .card {
        margin: 10px;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 10px;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 50px;
    height: 50px;
    border: 3px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}