:root {
    --background-color: #f4f7f6;
    --header-color: #360452;
    --main-text-color: #333;
    --border-color: #e0e0e0;
    --grid-line-color: #ececec;
    --unscheduled-bg: #e9eef2;
    --time-color: #888;
    --modal-bg: #fff;
    --modal-overlay: rgba(0, 0, 0, 0.6);
    --button-bg: #7109aa;
    --button-hover-bg: #360452;
    --delete-bg: #dc3545;
    --delete-hover-bg: #c82333;
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --shadow: 0 2px 4px rgba(0,0,0,0.1);

    /* New Theme Colors */
    --theme-agro-bg: #F0FDF4;
    --theme-agro-text: #14532D;
    --theme-agro-icon: #22C55E;
    
    --theme-turismo-bg: #F0F9FF;
    --theme-turismo-text: #082F49;
    --theme-turismo-icon: #0EA5E9;
    
    --theme-varejo-bg: #FFFBEB;
    --theme-varejo-text: #78350F;
    --theme-varejo-icon: #F59E0B;

    --theme-industria-bg: #F8FAFC;
    --theme-industria-text: #1E293B;
    --theme-industria-icon: #475569;

    --theme-startups-bg: #EEF2FF;
    --theme-startups-text: #312E81;
    --theme-startups-icon: #6366F1;

    --theme-cerimonial-bg: #FEF2F2;
    --theme-cerimonial-text: #7F1D1D;
    --theme-cerimonial-icon: #EF4444;

    --theme-fun-bg: #FEFCE8;
    --theme-fun-text: #713F12;
    --theme-fun-icon: #EAB308;

    --theme-saude-bg: #F0FDF9;
    --theme-saude-text: #047857;
    --theme-saude-icon: #10B981;

    --theme-inovacao-bg: #E0E7FF;
    --theme-inovacao-text: #3730A3;
    --theme-inovacao-icon: #4F46E5;

    --theme-credenciamento-bg: #F1F5F9;
    --theme-credenciamento-text: #334155;
    --theme-credenciamento-icon: #475569;
    
    --theme-desenvolvimento-regional-bg: #E6FFFA;
    --theme-desenvolvimento-regional-text: #234E52;
    --theme-desenvolvimento-regional-icon: #38B2AC;

    --theme-default-bg: #F3F4F6;
    --theme-default-text: #374151;
    --theme-default-icon: #6B7280;

    --delete-color: #EF4444;
}

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--main-text-color);
    margin: 0;
    line-height: 1.6;
    height: 100vh;
    overflow: hidden;
}

#app-wrapper {
    display: flex;
    flex-direction: column;
    height: 100%;
    display: none; /* Initially hidden */
}

header {
    background-color: var(--header-color);
    padding: 1.5rem 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
    gap: 1rem;
}

.header-logo {
    height: 40px;
    object-fit: contain;
}

#day-navigation {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: white;
    margin-left: auto;
}

#day-navigation button {
    background-color: transparent;
    border: 1px solid rgba(255,255,255,0.3);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

#day-navigation button:hover:not(:disabled) {
    background-color: rgba(255,255,255,0.1);
}

#day-navigation button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

#backup-btn svg, #restore-btn svg {
    width: 16px;
    height: 16px;
}

.header-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-left: auto;
}

header h1 {
    margin: 0;
    font-size: 1.5rem;
    white-space: nowrap;
}

#add-talk-btn {
    background-color: var(--button-bg);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.2s;
}

#add-talk-btn:hover {
    background-color: var(--button-hover-bg);
}

#app-container {
    display: flex;
    padding: 1rem;
    gap: 1rem;
    flex-grow: 1;
    min-height: 0;
}

#unscheduled-container {
    flex: 0 0 250px;
    background-color: var(--unscheduled-bg);
    border-radius: 8px;
    padding: 1rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

#unscheduled-container h2 {
    font-size: 1.2rem;
    margin-top: 0;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

#unscheduled-list {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    min-height: 100px; /* Ensure dropzone is always available */
}

#calendar-container {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

#calendar-header {
    display: grid;
    grid-template-columns: 40px 1fr; /* Time column + 1 day */
    grid-template-rows: auto auto;
    background-color: #fff;
    border-bottom: 2px solid var(--border-color);
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
}

.date-header {
    grid-column: 2 / 3;
    text-align: center;
    padding: 0.5rem;
    font-weight: bold;
    font-size: 1.2rem;
    color: var(--button-hover-bg);
    border-bottom: 1px solid var(--border-color);
}

.stages-header {
    grid-column: 2 / 3;
    display: grid;
    border-left: 1px solid var(--border-color);
}

.day-header {
    text-align: center;
    padding: 0.5rem;
    font-weight: bold;
    display: grid;
    /* grid-template-columns will be set by JS */
    border-left: 1px solid var(--border-color);
}

.stage-header {
    font-size: 0.9em;
    color: #555;
    border-right: 1px dotted var(--border-color);
    padding: 0.25rem 0;
    text-align: center;
}
.stage-header:last-child {
    border-right: none;
}

#calendar-body {
    display: flex;
    flex-grow: 1;
    overflow: auto;
    background-color: #fff;
    border-bottom-left-radius: 8px;
    border-bottom-right-radius: 8px;
}

#time-column {
    width: 40px;
    font-size: 0.75rem;
    color: var(--time-color);
    position: relative;
}

.time-marker {
    position: absolute;
    width: 100%;
    text-align: right;
    padding-right: 5px;
    box-sizing: border-box;
    border-top: 1px solid var(--grid-line-color);
}
.time-marker:first-child {
    border-top: none;
}

#schedule-grid {
    flex-grow: 1;
    display: grid;
    grid-template-columns: 1fr; /* 1 day */
    position: relative;
}

.day-column {
    position: relative;
    border-left: 1px solid var(--border-color);
    background-image: repeating-linear-gradient(var(--grid-line-color) 0 1px, transparent 1px 100%);
    display: grid;
    /* grid-template-columns will be set by JS */
}

.stage-column {
    position: relative;
    border-right: 1px dotted var(--border-color);
}
.stage-column:last-child {
    border-right: none;
}

/* --- NEW TALK CARD STYLES --- */

.talk-card {
    position: absolute;
    box-sizing: border-box;
    cursor: grab;
    transition: all 0.2s ease-in-out;
    display: flex;
    flex-direction: column;
    gap: 2px; /* Further reduced for compactness */
    padding: 6px 32px 6px 6px; /* Adjusted padding for buttons */
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.1);
    border: 1px solid rgba(0,0,0,0.08);
}


#unscheduled-list .talk-card {
    position: relative;
    left: auto;
    right: auto;
    top: auto;
    height: auto;
}

.talk-card.dragging {
    opacity: 0.5;
    transform: scale(1.05);
}

.card-category {
    display: flex;
    align-items: center;
    gap: 3px; /* Reduced for compactness */
}

.card-category svg {
    width: 16px; /* Reduced for compactness */
    height: 16px; /* Reduced for compactness */
    flex-shrink: 0;
}

.card-category .category-name {
    font-size: 0.6rem; /* Further reduced for compactness */
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-title {
    font-size: 0.72rem; /* Reduced for compactness and matched to info */
    font-weight: 600; /* Was 700 */
    margin: 0;
    line-height: 1.2;
}

.card-info-list {
    display: flex;
    flex-direction: column;
    gap: 1px; /* Reduced for compactness */
    margin-top: 1px; /* Reduced for compactness */
}

.card-info {
    display: flex;
    align-items: center;
    gap: 3px; /* Reduced for compactness */
    font-size: 0.72rem; /* Reduced for compactness */
}

.card-info svg {
    width: 12px; /* Reduced for compactness */
    height: 12px; /* Reduced for compactness */
    flex-shrink: 0;
    opacity: 0.7;
}

.card-actions {
    position: absolute;
    top: 6px;
    right: 4px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.action-btn {
    background: transparent;
    border: none;
    padding: 2px;
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
    color: inherit;
    opacity: 0.7;
}

.action-btn:hover {
    background-color: rgba(0,0,0,0.08);
    opacity: 1;
}

.action-btn svg {
    width: 14px;
    height: 14px;
}

.delete-btn-card {
    color: var(--delete-color);
}
.delete-btn-card:hover {
     background-color: rgba(239, 68, 68, 0.1);
}


/* Theme Colors */
.theme-agro { background-color: var(--theme-agro-bg); color: var(--theme-agro-text); }
.theme-turismo { background-color: var(--theme-turismo-bg); color: var(--theme-turismo-text); }
.theme-varejo { background-color: var(--theme-varejo-bg); color: var(--theme-varejo-text); }
.theme-industria { background-color: var(--theme-industria-bg); color: var(--theme-industria-text);}
.theme-startups { background-color: var(--theme-startups-bg); color: var(--theme-startups-text);}
.theme-cerimonial { background-color: var(--theme-cerimonial-bg); color: var(--theme-cerimonial-text);}
.theme-fun { background-color: var(--theme-fun-bg); color: var(--theme-fun-text); }
.theme-saude { background-color: var(--theme-saude-bg); color: var(--theme-saude-text); }
.theme-inovacao { background-color: var(--theme-inovacao-bg); color: var(--theme-inovacao-text); }
.theme-credenciamento { background-color: var(--theme-credenciamento-bg); color: var(--theme-credenciamento-text); }
.theme-desenvolvimento-regional { background-color: var(--theme-desenvolvimento-regional-bg); color: var(--theme-desenvolvimento-regional-text); }
.theme-default { background-color: var(--theme-default-bg); color: var(--theme-default-text); }

.theme-agro .card-category svg { color: var(--theme-agro-icon); }
.theme-turismo .card-category svg { color: var(--theme-turismo-icon); }
.theme-varejo .card-category svg { color: var(--theme-varejo-icon); }
.theme-industria .card-category svg { color: var(--theme-industria-icon); }
.theme-startups .card-category svg { color: var(--theme-startups-icon); }
.theme-cerimonial .card-category svg { color: var(--theme-cerimonial-icon); }
.theme-fun .card-category svg { color: var(--theme-fun-icon); }
.theme-saude .card-category svg { color: var(--theme-saude-icon); }
.theme-inovacao .card-category svg { color: var(--theme-inovacao-icon); }
.theme-credenciamento .card-category svg { color: var(--theme-credenciamento-icon); }
.theme-desenvolvimento-regional .card-category svg { color: var(--theme-desenvolvimento-regional-icon); }
.theme-default .card-category svg { color: var(--theme-default-icon); }


.dropzone.drag-over {
    background-color: #d4e7ff;
    outline: 2px dashed var(--button-bg);
    outline-offset: -4px;
}

/* This is the new style for the placeholder 'stripe' that snaps to the grid. */
.ghost-stripe {
    position: absolute;
    z-index: 10;
    pointer-events: none;
    background-color: rgba(108, 117, 125, 0.4); /* A semi-transparent gray */
    border: 1px dashed #6c757d;
    border-radius: 4px;
    box-sizing: border-box;
}

/* Modal */
#talk-modal {
    border: none;
    border-radius: 8px;
    box-shadow: 0 4px 25px rgba(0,0,0,0.2);
    padding: 0;
    width: 600px;
    max-width: 90vw;
    max-height: 90vh;
    overflow: hidden;
}

#talk-modal[open] {
    display: flex;
    flex-direction: column;
}

#talk-modal::backdrop {
    background-color: var(--modal-overlay);
}

.modal-header {
    background-color: var(--header-color);
    color: white;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close-btn {
    background: transparent;
    border: none;
    color: white;
    font-size: 2rem;
    font-weight: 300;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.modal-close-btn:hover {
    opacity: 1;
}

.modal-body {
    padding: 1.5rem 2rem;
    overflow-y: auto;
}

#talk-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

#talk-form label {
    font-size: 0.75rem;
    color: #6B7280;
    font-weight: 600;
    text-transform: uppercase;
    display: block;
    margin-bottom: -0.75rem;
}

.form-row {
    display: flex;
    gap: 1rem;
    align-items: flex-end;
}

.form-row > div {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem; /* Gap between label and input */
}

#talk-form input[type="text"],
#talk-form input[type="date"],
#talk-form input[type="time"],
#talk-form select,
#talk-form textarea {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    box-sizing: border-box;
    margin-top: 0.25rem;
}

#related-themes-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-top: 1rem;
    background-color: #f8f9fa;
}

.related-theme-tag {
    font-size: 0.8rem; /* Smaller font as requested */
    padding: 0.3rem 0.7rem;
    border: 1px solid #ccc;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.2s ease;
    background-color: #fff;
    color: #555;
    user-select: none; /* prevent text selection on click */
}

.related-theme-tag:hover:not(.disabled) {
    border-color: var(--button-hover-bg);
    color: var(--button-hover-bg);
}

.related-theme-tag.selected {
    background-color: var(--button-bg);
    color: white;
    border-color: var(--button-bg);
    font-weight: 500;
}

.related-theme-tag.disabled {
    cursor: not-allowed;
    background-color: #f0f0f0;
    color: #aaa;
    border-color: #ddd;
}

#speakers-container {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
}

.speaker-group {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.speaker-details {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.speaker-details input {
    margin-bottom: 0;
}

.form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.form-actions > div {
    display: flex;
    gap: 0.5rem;
}

.form-actions button {
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.2s;
}

#save-btn {
    background-color: var(--button-bg);
    color: white;
}
#save-btn:hover {
    background-color: var(--button-hover-bg);
}

.delete-button {
    background-color: var(--delete-bg);
    color: white;
}
.delete-button:hover {
    background-color: var(--delete-hover-bg);
}

#add-speaker-btn {
    align-self: flex-start;
    padding: 0.3rem 0.8rem;
    font-size: 0.9rem;
    background-color: #28a745;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 1rem;
}

.duplicate-button {
    background-color: #17a2b8;
    color: white;
}
.duplicate-button:hover {
    background-color: #138496;
}

.action-button {
    background-color: var(--button-bg);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.2s;
    height: 38px;
    padding: 0 0.8rem;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
}

.action-button:hover {
    background-color: var(--button-hover-bg);
}

#public-view-btn {
    width: auto;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Login Styles */
#login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(40, 40, 40, 0.85);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

#login-box {
    background: white;
    padding: 2.5rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    width: 320px;
}

#login-box h2 {
    margin-top: 0;
    color: var(--header-color);
}

#login-form input {
    width: 100%;
    padding: 0.8rem;
    margin-top: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 1rem;
}

#login-form button {
    width: 100%;
    padding: 0.8rem;
    margin-top: 1rem;
    border: none;
    border-radius: 4px;
    background-color: var(--button-bg);
    color: white;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

#login-form button:hover {
    background-color: var(--button-hover-bg);
}

.header-text-logo {
    color: white;
    font-size: 1.75rem;
    font-weight: 600;
    margin: 0;
    line-height: 40px; /* Match logo height for vertical alignment */
    white-space: nowrap;
    padding-right: 1rem; /* Spacing for admin view */
}

/* Styles for short talk cards */
.talk-card.short-talk {
    justify-content: center;
    gap: 4px;
    text-align: center;
}

.talk-card.short-talk .card-info-list {
    justify-content: center;
}

.talk-card.short-talk .card-category,
.talk-card.short-talk .card-info:not(.card-info-time),
.talk-card.short-talk .card-actions {
    display: none;
}