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

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-glow-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-primary), var(--shadow-xl);
}

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

.btn-secondary:hover {
    background: var(--color-glass-hover);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

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

.btn-ghost:hover {
    color: var(--color-primary);
    border-color: var(--color-glass-border);
}

.btn-lg {
    padding: var(--space-5) var(--space-10);
    font-size: var(--font-size-lg);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
}

/* ===== GLASS CARD ===== */
.glass-card {
    background: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    backdrop-filter: blur(var(--blur-lg));
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
}

.glass-card:hover {
    background: var(--color-glass-hover);
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl);
}

/* ===== TAGS / BADGES ===== */
.tag {
    display: inline-flex;
    align-items: center;
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
    background: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.tag:hover {
    background: var(--color-glass-hover);
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.tag-primary {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.tag-accent {
    background: rgba(168, 85, 247, 0.1);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* ===== FORM INPUTS ===== */
.form-group {
    margin-bottom: var(--space-6);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--space-4);
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    background: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(var(--blur-md));
    transition: all var(--transition-base);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

/* ===== SOCIAL ICONS ===== */
.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
    backdrop-filter: blur(var(--blur-md));
}

.social-icon:hover {
    background: var(--gradient-primary);
    border-color: var(--color-primary);
    color: var(--color-text-primary);
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-glow-primary);
}

/* ===== TIMELINE ===== */
.timeline {
    position: relative;
    padding-left: var(--space-8);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-primary);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--space-8);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--space-8) - 6px);
    top: 0;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 3px solid var(--color-bg-primary);
    box-shadow: var(--shadow-glow-primary);
}

/* ===== LOADING SPINNER ===== */
.loader-circle {
    width: 60px;
    height: 60px;
    border: 3px solid var(--color-glass-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ===== SECTION TITLE ===== */
.section-title {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-title h2 {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-extrabold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-4);
}

.section-title p {
    font-size: var(--font-size-lg);
    color: var(--color-text-tertiary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== PROJECT CARD ===== */
.project-card {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    background: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    backdrop-filter: blur(var(--blur-lg));
    transition: all var(--transition-base);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--color-primary);
}

.project-card-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-card-image {
    transform: scale(1.05);
}

.project-card-content {
    padding: var(--space-6);
}

.project-card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-3);
}

.project-card-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-4);
    line-height: var(--line-height-relaxed);
}

.project-card-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.project-card-links {
    display: flex;
    gap: var(--space-4);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .glass-card {
        padding: var(--space-6);
    }

    .btn-lg {
        padding: var(--space-4) var(--space-6);
        font-size: var(--font-size-base);
    }

    .section-title h2 {
        font-size: var(--font-size-3xl);
    }
}