/*
 * StudentFocus - Executive Mode Focus Page Styling
 * 
 * AC: POM-01-10 (No animations, no celebration graphics)
 * Design: Calm, Professional, Dense, Non-playful
 * 
 * Philosophy: This is controlled intensity infrastructure, not a productivity toy.
 */

/* ============================================
   EXECUTIVE MODE COLOR PALETTE
   ============================================ */

:root {
    --exec-bg: #0f172a;          /* Slate-900 */
    --exec-timer: #38bdf8;        /* Ocean-400 */
    --exec-text: #f1f5f9;         /* Slate-100 */
    --exec-text-heading: #ffffff; /* White */
    --exec-text-muted: #94a3b8;   /* Slate-400 */
    --exec-border: #334155;       /* Slate-700 */
    --exec-alert: #f59e0b;        /* Amber-500 (burnout alert) */
    --exec-alert-bg: rgba(245, 158, 11, 0.1);
    --exec-danger: #ef4444;       /* Red-500 */
    --exec-success: #10b981;      /* Green-500 */
}

/* ============================================
   BURNOUT ALERT (POM-06-01, POM-06-02)
   ============================================ */

.exec-alert {
    display: flex;
    align-items: center;
    gap: var(--sf-3);
    padding: var(--sf-4);
    border-radius: var(--sf-radius-lg);
    margin-bottom: var(--sf-6);
    background: var(--exec-alert-bg);
    border-left: 4px solid var(--exec-alert);
}

.exec-alert i {
    color: var(--exec-alert);
    font-size: var(--sf-text-lg);
}

.exec-alert span {
    flex: 1;
    color: var(--sf-text-dark);
    font-size: var(--sf-text-base);
}

.exec-alert-dismiss {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--exec-text-muted);
    cursor: pointer;
    padding: var(--sf-2);
    border-radius: var(--sf-radius-md);
    transition: background-color 0.2s;
}

.exec-alert-dismiss:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

/* ============================================
   FOCUS START FORM
   ============================================ */

.exec-focus-start {
    max-width: 500px;
    margin: 0 auto;
    padding: var(--sf-6);
}

.exec-start-title {
    font-size: var(--sf-text-2xl);
    font-weight: var(--sf-weight-semibold);
    color: var(--sf-text-heading);
    margin-bottom: var(--sf-6);
}

.exec-field-group {
    margin-bottom: var(--sf-5);
}

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

.exec-select {
    width: 100%;
    padding: var(--sf-3);
    border: 1px solid var(--sf-border-light);
    border-radius: var(--sf-radius-md);
    background: var(--sf-bg-input);
    color: var(--sf-text-dark);
    font-size: var(--sf-text-base);
    transition: border-color 0.2s;
}

.exec-select:focus {
    outline: none;
    border-color: var(--sf-primary-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.exec-textarea {
    width: 100%;
    padding: var(--sf-3);
    border: 1px solid var(--sf-border-light);
    border-radius: var(--sf-radius-md);
    background: var(--sf-bg-input);
    color: var(--sf-text-dark);
    font-size: var(--sf-text-base);
    font-family: inherit;
    resize: vertical;
    transition: border-color 0.2s;
}

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

/* ============================================
   DURATION SELECTION (POM-01-02)
   ============================================ */

.exec-duration-buttons {
    display: flex;
    gap: var(--sf-3);
}

.exec-duration-btn {
    flex: 1;
    padding: var(--sf-4);
    border: 2px solid var(--sf-border-light);
    border-radius: var(--sf-radius-lg);
    background: var(--sf-bg-card);
    color: var(--sf-text-secondary);
    font-size: var(--sf-text-lg);
    font-weight: var(--sf-weight-semibold);
    cursor: pointer;
    transition: all 0.2s;
}

.exec-duration-btn:hover {
    border-color: var(--sf-primary-blue);
    color: var(--sf-primary-blue);
}

.exec-duration-btn.active {
    border-color: var(--sf-primary-blue);
    background: rgba(59, 130, 246, 0.1);
    color: var(--sf-primary-blue);
}

.exec-duration-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ============================================
   BUTTONS
   ============================================ */

.exec-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--sf-2);
    padding: var(--sf-3) var(--sf-4);
    border: none;
    border-radius: var(--sf-radius-md);
    font-size: var(--sf-text-base);
    font-weight: var(--sf-weight-medium);
    cursor: pointer;
    transition: all 0.2s;
}

.exec-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.exec-btn-primary {
    background: var(--sf-primary-blue);
    color: white;
}

.exec-btn-primary:hover:not(:disabled) {
    background: #2563eb;
}

.exec-btn-danger {
    background: var(--exec-danger);
    color: white;
}

.exec-btn-danger:hover:not(:disabled) {
    background: #dc2626;
}

.exec-btn-success {
    background: var(--exec-success);
    color: white;
}

.exec-btn-success:hover:not(:disabled) {
    background: #059669;
}

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

.exec-btn-ghost:hover:not(:disabled) {
    background: var(--sf-bg-hover);
}

.exec-start-actions {
    display: flex;
    justify-content: center;
    margin-top: var(--sf-6);
}

/* ============================================
   MOMENTUM DISPLAY (POM-05-01)
   ============================================ */

.exec-momentum {
    margin-top: var(--sf-6);
    padding: var(--sf-5);
    background: var(--sf-bg-card);
    border-radius: var(--sf-radius-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid var(--sf-border-light);
}

.exec-momentum-label {
    font-size: var(--sf-text-sm);
    color: var(--sf-text-muted);
}

.exec-momentum-value {
    font-size: var(--sf-text-3xl);
    font-weight: var(--sf-weight-bold);
    color: var(--sf-primary-blue);
    font-variant-numeric: tabular-nums;
}

/* ============================================
   TIMER DISPLAY (POM-01-10)
   ============================================ */

.exec-timer-container {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--sf-8);
    background: var(--sf-bg-card);
    border-radius: var(--sf-radius-xl);
    box-shadow: var(--sf-shadow-lg);
}

.exec-timer-header {
    display: flex;
    flex-direction: column;
    gap: var(--sf-2);
    margin-bottom: var(--sf-6);
}

.exec-timer-initiative {
    font-size: var(--sf-text-lg);
    font-weight: var(--sf-weight-semibold);
    color: var(--sf-primary-blue);
}

.exec-timer-task {
    font-size: var(--sf-text-base);
    color: var(--sf-text-muted);
}

/* Large Numeric Countdown (POM-01-10) */
.exec-timer-display {
    text-align: center;
    margin: var(--sf-8) 0;
}

.exec-timer-time {
    font-size: 4rem; /* 64px */
    font-weight: var(--sf-weight-bold);
    color: var(--sf-text-heading);
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.05em;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

.exec-timer-label {
    font-size: var(--sf-text-sm);
    color: var(--sf-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: var(--sf-2);
}

/* Thin Progress Bar (no animation - POM-01-10) */
.exec-progress-bar {
    height: 4px;
    background: var(--sf-gray-200);
    border-radius: var(--sf-radius-full);
    overflow: hidden;
    margin: var(--sf-6) 0;
}

.exec-progress-fill {
    height: 100%;
    background: var(--sf-primary-blue);
    border-radius: var(--sf-radius-full);
    transition: width 1s linear; /* Only width changes, no fancy animations */
}

.exec-timer-actions {
    display: flex;
    justify-content: center;
    gap: var(--sf-3);
    margin-top: var(--sf-6);
}

/* ============================================
   ACTIVE SESSION STRIP (POM-03-01)
   ============================================ */

.exec-session-strip {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--sf-3) var(--sf-6);
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    box-shadow: var(--sf-shadow-md);
}

.exec-strip-content {
    display: flex;
    align-items: center;
    gap: var(--sf-4);
}

.exec-strip-icon {
    font-size: var(--sf-text-lg);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.exec-strip-details {
    display: flex;
    align-items: center;
    gap: var(--sf-3);
    flex-wrap: wrap;
}

.exec-strip-initiative {
    font-weight: var(--sf-weight-semibold);
}

.exec-strip-task {
    opacity: 0.9;
}

.exec-strip-time {
    font-variant-numeric: tabular-nums;
    font-weight: var(--sf-weight-medium);
    padding: var(--sf-1) var(--sf-3);
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--sf-radius-full);
}

.exec-strip-stop {
    padding: var(--sf-2) var(--sf-4);
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    border-radius: var(--sf-radius-md);
    cursor: pointer;
    font-weight: var(--sf-weight-medium);
    transition: all 0.2s;
}

.exec-strip-stop:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* ============================================
   MODALS
   ============================================ */

.exec-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1050;
    padding: var(--sf-4);
}

.exec-modal {
    background: white;
    border-radius: var(--sf-radius-xl);
    max-width: 500px;
    width: 100%;
    box-shadow: var(--sf-shadow-2xl);
}

.exec-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--sf-6);
    border-bottom: 1px solid var(--sf-border-light);
}

.exec-modal-header h3 {
    font-size: var(--sf-text-xl);
    font-weight: var(--sf-weight-semibold);
    color: var(--sf-text-heading);
    margin: 0;
}

.exec-modal-close {
    background: none;
    border: none;
    color: var(--sf-text-muted);
    cursor: pointer;
    padding: var(--sf-2);
    border-radius: var(--sf-radius-md);
    transition: background-color 0.2s;
}

.exec-modal-close:hover {
    background: var(--sf-bg-hover);
}

.exec-modal-body {
    padding: var(--sf-6);
}

.exec-modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--sf-3);
    padding: var(--sf-6);
    border-top: 1px solid var(--sf-border-light);
}

/* ============================================
   ENERGY CHECK MODAL (POM-02-01)
   ============================================ */

.exec-energy-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--sf-3);
}

.exec-energy-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--sf-2);
    padding: var(--sf-4);
    border: 2px solid var(--sf-border-light);
    border-radius: var(--sf-radius-lg);
    background: var(--sf-bg-card);
    cursor: pointer;
    transition: all 0.2s;
}

.exec-energy-option:hover {
    border-color: var(--sf-primary-blue);
    background: rgba(59, 130, 246, 0.05);
}

.exec-energy-option i {
    font-size: var(--sf-text-2xl);
    color: var(--sf-primary-blue);
}

.exec-energy-option span {
    font-size: var(--sf-text-sm);
    font-weight: var(--sf-weight-medium);
    color: var(--sf-text-dark);
}

/* ============================================
   COMPLETION MODAL (POM-04-02)
   ============================================ */

.exec-complete-message {
    font-size: var(--sf-text-base);
    color: var(--sf-text-dark);
    margin-bottom: var(--sf-4);
}

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

@media (max-width: 768px) {
    .exec-timer-time {
        font-size: 3rem; /* 48px on mobile */
    }
    
    .exec-timer-container {
        padding: var(--sf-6);
    }
    
    .exec-session-strip {
        padding: var(--sf-2) var(--sf-4);
    }
    
    .exec-strip-details {
        font-size: var(--sf-text-sm);
    }
    
    .exec-duration-buttons {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .exec-timer-time {
        font-size: 2.5rem; /* 40px on small mobile */
    }
    
    .exec-momentum {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--sf-2);
    }
    
    .exec-energy-options {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   NO ANIMATIONS ENFORCEMENT (POM-01-10)
   ============================================ */

/* Explicitly disable any accidental animations except the subtle pulse */
.exec-timer-container *:not(.exec-strip-icon),
.exec-focus-start *,
.exec-modal * {
    animation: none !important;
}

/* Only allow linear transitions for progress bar */
.exec-progress-fill {
    transition: width 1s linear;
}

/* Allow subtle button hover transitions */
.exec-btn,
.exec-duration-btn,
.exec-energy-option {
    transition: background-color 0.2s, border-color 0.2s, color 0.2s;
}