/**
 * Professional Header - Monday.com Style
 * Modern, Clean, Functional
 */

/* ============================================
   HEADER CONTAINER
   ============================================ */

.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: var(--neutral-0);
    border-bottom: 1px solid var(--neutral-200);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.site-header .container-fluid {
    max-width: 100%;
    padding: 0 var(--space-6);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: var(--space-6);
}

/* ============================================
   LEFT SECTION
   ============================================ */

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex: 1;
    min-width: 0; /* Allow flex shrinking */
}

/* Brand Logo */
.brand-logo {
    flex-shrink: 0;
}

.brand-logo a {
    text-decoration: none;
    display: flex;
    align-items: center;
}

.brand-text {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: var(--font-extrabold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
    transition: opacity var(--transition-base);
}

.brand-logo-img {
    height: 24px;
    width: auto;
    display: block;
    transition: opacity var(--transition-base);
}

.brand-logo a:hover .brand-text {
    opacity: 0.8;
}

.brand-logo a:hover .brand-logo-img {
    opacity: 0.8;
}

/* Header Divider */
.header-divider {
    width: 1px;
    height: 32px;
    background: var(--neutral-200);
    flex-shrink: 0;
}

/* Client Logo */
.client-logo-container {
    flex-shrink: 0;
    padding: var(--space-1);
}

.client-logo {
    height: 36px;
    width: auto;
    max-width: 120px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    transition: transform var(--transition-base);
}

.client-logo:hover {
    transform: scale(1.05);
}

/* Project Info */
.project-info-header {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.project-title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.2;
}

.project-meta {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-sm);
}

/* Project Code Badge */
.project-code-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-2);
    background: var(--neutral-100);
    color: var(--neutral-600);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    transition: all var(--transition-base);
    cursor: pointer;
    user-select: all;
}

.project-code-badge:hover {
    background: var(--neutral-200);
    color: var(--neutral-700);
}

.icon-code {
    flex-shrink: 0;
}

/* Session Number */
.session-number {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-2);
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--primary-100) 100%);
    color: var(--primary-600);
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    border: 1px solid var(--primary-200);
}

.icon-version {
    flex-shrink: 0;
}

/* ============================================
   RIGHT SECTION
   ============================================ */

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    flex-shrink: 0;
}

/* ============================================
   COMPLETION INDICATOR
   ============================================ */

.completion-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-4);
    background: var(--neutral-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--neutral-200);
    transition: all var(--transition-base);
}

.completion-indicator:hover {
    background: var(--neutral-100);
    box-shadow: var(--shadow-sm);
}

/* Progress Circle */
.completion-circle {
    position: relative;
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.progress-ring {
    transform: rotate(-90deg);
}

.progress-ring-bg {
    fill: none;
    stroke: var(--neutral-200);
    stroke-width: 3;
}

.progress-ring-fill {
    fill: none;
    stroke: var(--success-500);
    stroke-width: 3;
    stroke-linecap: round;
    transition: stroke-dashoffset var(--transition-slow), stroke var(--transition-base);
}

.progress-ring-fill.low {
    stroke: var(--error-500);
}

.progress-ring-fill.medium {
    stroke: var(--warning-500);
}

.progress-ring-fill.high {
    stroke: var(--info-500);
}

.progress-ring-fill.complete {
    stroke: var(--success-500);
}

.completion-percentage {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    line-height: 1;
}

/* Completion Label */
.completion-label {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.completion-title {
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.completion-status {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

/* ============================================
   SAVE INDICATOR
   ============================================ */

.save-status {
    flex-shrink: 0;
}

.save-indicator {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    transition: all var(--transition-base);
}

.save-indicator[data-status="saved"] {
    background: var(--success-50);
    color: var(--success-600);
}

.save-indicator[data-status="saving"] {
    background: var(--info-50);
    color: var(--info-600);
}

.save-indicator[data-status="error"] {
    background: var(--error-50);
    color: var(--error-600);
}

.save-icon {
    flex-shrink: 0;
    animation: fadeIn var(--transition-base);
}

.save-indicator[data-status="saving"] .save-icon {
    animation: spin 1s linear infinite;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
    .header-content {
        height: 56px;
    }

    .site-header .container-fluid {
        padding: 0 var(--space-4);
    }

    .project-title {
        font-size: var(--text-base);
    }

    .completion-label {
        display: none;
    }

    .completion-indicator {
        padding: var(--space-2);
    }
}

@media (max-width: 768px) {
    .header-content {
        gap: var(--space-3);
    }

    .header-left {
        gap: var(--space-2);
    }

    .header-divider {
        display: none;
    }

    .client-logo-container {
        display: none !important;
    }

    .project-meta {
        flex-wrap: wrap;
    }

    .session-number {
        display: none !important;
    }

    .save-text {
        display: none;
    }

    .completion-indicator {
        display: none !important;
    }
}

@media (max-width: 480px) {
    .site-header .container-fluid {
        padding: 0 var(--space-3);
    }

    .brand-text {
        font-size: var(--text-base);
    }

    .project-title {
        font-size: var(--text-sm);
    }

    .project-code-badge {
        font-size: 10px;
        padding: 2px var(--space-1);
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.site-header {
    animation: slideDown var(--transition-base);
}

/* ============================================
   DARK MODE SUPPORT (Future)
   ============================================ */

@media (prefers-color-scheme: dark) {
    .site-header {
        background: var(--neutral-900);
        border-bottom-color: var(--neutral-700);
    }

    .header-divider {
        background: var(--neutral-700);
    }

    .project-code-badge {
        background: var(--neutral-800);
        color: var(--neutral-300);
    }

    .project-code-badge:hover {
        background: var(--neutral-700);
    }

    .completion-indicator {
        background: var(--neutral-800);
        border-color: var(--neutral-700);
    }

    .completion-indicator:hover {
        background: var(--neutral-750);
    }
}