/* ========================================
   REUSABLE COMPONENTS
   ======================================== */

/* Buttons */
.btn {
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    border: 1px solid transparent;
    cursor: pointer;
    font-size: 0.95rem;
    letter-spacing: 0.3px;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient);
    color: #05050a;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--glow);
    color: #05050a;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}

.btn-secondary:hover {
    background: rgba(0, 242, 254, 0.05);
    border-color: var(--primary-color);
    box-shadow: var(--glow);
    transform: translateY(-3px);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--text-secondary);
}

.btn-outline:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: var(--glow);
    transform: translateY(-3px);
}

.btn-glass {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
}

.btn-glass:hover {
    background: rgba(0, 242, 254, 0.08);
    border-color: var(--primary-color);
    box-shadow: var(--glow);
    transform: translateY(-3px);
}

.btn-small {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 2rem;
    border: 1px solid rgba(0, 217, 255, 0.2);
    transition: all var(--transition-fast);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--glow);
    border-color: var(--primary-color);
}

/* Loader */
.loader-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader-wrapper.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    text-align: center;
}

.loader-circle {
    width: 15px;
    height: 15px;
    background: var(--gradient);
    border-radius: 50%;
    display: inline-block;
    margin: 0 5px;
    animation: bounce 1.4s infinite ease-in-out both;
}

.loader-circle:nth-child(1) {
    animation-delay: -0.32s;
}

.loader-circle:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes bounce {

    0%,
    80%,
    100% {
        transform: scale(0);
    }

    40% {
        transform: scale(1);
    }
}

.loader-text {
    margin-top: 2rem;
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 500;
}

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: var(--gradient);
    z-index: 9999;
    transition: width 0.3s ease;
}

/* Back to Top Button */
#backToTopBtn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 1000;
}

#backToTopBtn.show {
    opacity: 1;
    visibility: visible;
}

#backToTopBtn:hover {
    transform: translateY(-5px);
    box-shadow: var(--glow);
}