/* ROOT DATA */

:root {
    --bg-color: #FFF;
    --text-color: #000;

    --element-bg-color: #1A1A2E;
    --element-text-color: #FFF;
    
    --button-hover-bg-color: #2C2C44;
    --button-disabled-bg-color: #13131F;
    --button-disabled-text-color: #666A7A;
    
    --option-unactive-bg-color: #505049;

    --tag-bg-color: #3080f0;
    --tag-text-color: #000;

    --answer-border-color: #FFF;
}

/* WELCOME PAGE */

.welcome-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    margin: 0 auto;
}

.welcome-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #ffffff;
    width: 100%;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-logo {
    height: 60px;
    width: 60px;
    cursor: pointer;
}

.nav-title {
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0;
    color: #333;
}

.nav-right {
    display: flex;
    align-items: center;
}


.punchline-section {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 4rem 2rem;
    color: var(--element-text-color);
    background: linear-gradient(135deg, var(--button-hover-bg-color), var(--element-bg-color));
    text-align: center;
}

.punchline {
    font-size: 2rem;
    font-weight: bold;
    color: white;
    max-width: 900px;
    line-height: 1.4;
    letter-spacing: 1px;
    animation: fadeIn 1.5s ease-in-out;
}

@keyframes fadeIn {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
}

/* REST OF PAGES */

.element {
    background-color: var(--element-bg-color);
    color: var(--element-text-color);

}

.login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 70vh;
    text-align: center;
    padding: 40px 20px;
    width: 60%;
    max-width: 500px;
    border-radius: 12px;
}

.login-logo {
    width: 200px;
    margin-bottom: 5em;
}

.login-container h1 {
    color: var(--element-text-color);
    margin-bottom: 10px;
    font-family: 'Segoe UI', sans-serif;
}

.login-container p {
    color: #aaaaaa;
    margin-bottom: 30px;
}

.google-login-btn {
    display: flex;
    align-items: center;
    text-decoration: none;
    background-color: #ffffff;
    color: #555555;
    padding: 12px 20px;
    border-radius: 8px;
    font-weight: bold;
    transition: all 0.3s ease;
}

.google-login-btn:hover {
    background-color: #dddddd;
}

.google-icon {
    width: 24px;
    height: 24px;
    margin-right: 10px;
}

.left-fade-top, .left-fade-bottom {
    position: absolute;
    left: 0;
    right: 0;
    height: 20px;
    pointer-events: none;
    z-index: 2;  /* higher than list items */
}

.left-fade-top {
    border-radius: 12px 12px 0 0;
    top: 0;
    background: linear-gradient(to bottom, var(--bg-color), rgba(0, 0, 26, 0));
}

.left-fade-bottom {
    border-radius: 0 0 12px 12px;
    bottom: 0;
    background: linear-gradient(to top, var(--bg-color), rgba(0,0,26,0));
}

.left-list-item {
    border-radius: 8px !important;;
    cursor: pointer;
    transition: all 0.2s ease;
    padding: 12px 16px 40px 16px;
    color: var(--element-text-color);
    border: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 1);
    position: relative;
}

.left-list-item.inactive {
    background-color: var(--option-unactive-bg-color);
}

.left-list-item.selected {
    background-color: var(--element-bg-color);
}

.left-list-item.inactive:hover {
    background-color: var(--button-hover-bg-color);
    color: var(--element-text-color);
}

.left-list-item.selected:hover {
    background-color: var(--button-hover-bg-color);
    color: var(--element-text-color);
}

.left-list-item .modality-tag {
    position: absolute;
    bottom: 12px;
    left: 12px;
    background-color: #3080F0;
    color: #000;
    font-size: 12px;
    padding: 2px 6px;
    border-radius: 4px;
    white-space: nowrap;
}

.left-list-item .delete-cross {
    position: absolute;
    bottom: 12px;
    right: 12px;
    font-size: 20px;
    color: #aaa;
    cursor: pointer;
    transition: color 0.2s ease;
}

.left-list-item .delete-cross:hover {
    color: #ff4d4d;
}


.main_container {
    height: 100%;
    width: 100%;
}

.all-btns {
    border: none;
}

.all-btns:hover {
    background-color: var(--button-hover-bg-color);
    color: var(--element-text-color);
}

.all-btns:disabled {
    background-color: var(--button-disabled-bg-color);
    color: var(--button-disabled-text-color);
    cursor: not-allowed;
    opacity: 0.7;
}

.btn-group button {
    background-color: var(--option-unactive-bg-color);
    color: var(--element-text-color);
    border: none;
    margin: 0.1em;
}

.btn-group button:hover {
    background-color: var(--button-hover-bg-color);
    color: var(--element-text-color);
}

.btn-group button.active {
    background-color: var(--element-bg-color);
    color: var(--element-text-color);
}

.card-place {
    height: 90%;
    width: 100%;
    background-color: var(--element-bg-color);
    border-radius: 12px;
}

.error-hint {
    background-color: #f8d7da;  /* light red */
    color: #721c24;            /* dark red text */
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.9em;
    white-space: nowrap;       /* keeps it on one line */
}

.pdf-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0,0,0,0.7); /* dark backdrop */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.pdf-grid {
    display: grid;
    /* no google ads
    grid-template-columns: 1fr 2fr 1fr;
    width: 100%;
    */
    height: 100%;
    gap: 1rem;
    padding: 1rem;
    box-sizing: border-box;
}

.side-ad {
    display: flex;
    justify-content: center;
    align-items: center;
}

.pdf-center {
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 8px;
    overflow: hidden;
}

.pdf-buttons {
    background: rgba(0,0,0,0.05);
}


.pdf-canvas {
    border-radius: 10px;
    box-shadow: 0px 0px 40px rgba(0,0,0,0.15);
    background-color: "white";
    display: "block";
}

#loading-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    background: rgba(0,0,0,0.5);
    align-items: center;   /* vertical centering */
    justify-content: flex-start; /* push content left */
    padding-left: 37%;   /* adjust how far from left */
    z-index: 9999;
}

.loading-content {
    display: flex;
    flex-direction: column; /* stack image + text vertically */
    align-items: center;    /* center text under image */
    text-align: center;
}

#loading-logo {
    height: 150px;
    width: 150px;
    animation: spinZoom 3s cubic-bezier(0.2, 0, 0.2, 1) infinite;
}

/* Accelerated spin + zoom in/out */
@keyframes spinZoom {
    0% {
        transform: rotate(0deg) scale(1);
    }
    20% {
        transform: rotate(360deg) scale(1);
    }
    35% {
        transform: rotate(360deg) scale(1.2);
    }
    50% {
        transform: rotate(360deg) scale(1);
    }
    70% {
        transform: rotate(0deg) scale(1);
    }
    85% {
        transform: rotate(0deg) scale(1.2);
    }
    100% {
        transform: rotate(0deg) scale(1);
    }
}

#loading-hint {
    margin-top: 1em;
    font-size: 1.2em;
    color: #fff;
}

.pdf-page-container {
    border: 2px solid transparent;
    border-radius: 4px;
    position: relative;
    display: inline-block;
}

.pdf-page-container.selected-page {
    border-color: rgba(0, 123, 255, 0.5); /* slightly blue */
    box-shadow: 0 0 8px rgba(0, 123, 255, 0.3);
}

.canvas-blur {
    filter: blur(5px);
}