/* ───────────── QR GENERATOR TOOL ───────────── */
/* ─── HERO SECTION ─── */

.qr-hero {
    position: relative;
    min-height: 60vh;
    background: linear-gradient(135deg, var(--deep-navy-dark) 0%, var(--deep-navy) 40%, var(--deep-navy-light) 100%);
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: 10rem;
    padding-bottom: 4rem;
}

.qr-hero .hero-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.qr-hero .particle {
    position: absolute;
    left: var(--x);
    top: var(--y);
    width: var(--s);
    height: var(--s);
    background: rgba(135, 206, 235, 0.25);
    border-radius: 50%;
    animation: particleFloat var(--d) ease-in-out infinite;
}

@keyframes particleFloat {
    0%, 100% { transform: translateY(0) scale(1); opacity: 0.3; }
    50% { transform: translateY(-30px) scale(1.5); opacity: 0.7; }
}

.qr-hero .hero-floating-icons {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 1;
}

.qr-hero .floating-icon {
    position: absolute;
    font-size: 3.2rem;
    color: var(--sky-blue);
    opacity: 0.2;
    animation: floatIcon var(--duration) ease-in-out infinite;
    animation-delay: var(--delay);
    filter: drop-shadow(0 0 8px rgba(135, 206, 235, 0.2));
}

@keyframes floatIcon {
    0%, 100% { transform: translateY(0) translateX(0) rotate(0deg); }
    25% { transform: translateY(-20px) translateX(15px) rotate(5deg); }
    50% { transform: translateY(10px) translateX(-10px) rotate(-5deg); }
    75% { transform: translateY(-15px) translateX(-20px) rotate(3deg); }
}

.qr-hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    padding: 1rem 0;
}

.qr-hero .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    background: rgba(135, 206, 235, 0.15);
    color: var(--sky-blue);
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-size: 1.3rem;
    font-weight: 500;
    margin-bottom: 2.5rem;
    border: 1px solid rgba(135, 206, 235, 0.3);
}

.qr-hero .hero-title {
    font-size: clamp(3.2rem, 5vw, 5.6rem);
    font-weight: 800;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 2rem;
}

.qr-hero .hero-title .highlight {
    color: var(--sky-blue);
}

.qr-hero .hero-subtitle {
    font-size: clamp(1.5rem, 2vw, 1.8rem);
    color: rgba(255, 255, 255, 0.75);
    max-width: 580px;
    line-height: 1.8;
    margin-bottom: 0;
    padding: 0.5rem 0;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

.qr-hero .hero-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    z-index: 2;
}

.qr-hero .hero-wave svg {
    display: block;
    width: 100%;
    height: auto;
}

/* ─── TOOL SECTION ─── */

.qr-tool-section {
    padding: 8rem 0 10rem;
    background: var(--gray-50);
    min-height: 80vh;
}

.qr-tool-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: stretch;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 5rem;
    box-shadow: var(--shadow-md);
    border: 2px solid var(--gray-200);
    border-top: 4px solid var(--sky-blue);
    min-height: 550px;
    transition: border-color 0.3s ease;
}

.qr-tool-wrapper:hover {
    border-color: var(--sky-blue-light);
}

/* Controls */
.qr-controls {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    justify-content: center;
}

.qr-input-group label {
    display: block;
    font-weight: 600;
    color: var(--deep-navy);
    margin-bottom: 0.8rem;
    font-size: 1.5rem;
}

.qr-input-group label i {
    color: var(--sky-blue-dark);
    margin-right: 0.6rem;
}

.input-with-button {
    display: flex;
    gap: 1rem;
}

.input-with-button input {
    flex: 1;
    padding: 1.4rem 1.8rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 1.5rem;
    transition: var(--transition);
    background: var(--gray-50);
}

.input-with-button input:focus {
    border-color: var(--sky-blue);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(135, 206, 235, 0.15);
    outline: none;
}

.input-with-button .btn {
    white-space: nowrap;
    padding: 1.4rem 3rem;
    border: 2px solid var(--sky-blue);
    font-weight: 600;
}

.input-with-button .btn:hover {
    border-color: var(--sky-blue-dark);
}

.qr-color-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
}

.color-picker-group {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.color-picker-group label {
    font-weight: 500;
    color: var(--deep-navy);
    font-size: 1.4rem;
}

.color-picker-group label i {
    color: var(--sky-blue-dark);
    margin-right: 0.5rem;
}

.color-picker-group input[type="color"] {
    width: 100%;
    height: 56px;
    padding: 4px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm);
    cursor: pointer;
    background: var(--white);
    transition: border-color 0.3s;
}

.color-picker-group input[type="color"]:hover,
.color-picker-group input[type="color"]:focus {
    border-color: var(--sky-blue);
}

.qr-size-option {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.qr-size-option label {
    font-weight: 500;
    color: var(--deep-navy);
    font-size: 1.4rem;
}

.qr-size-option label i {
    color: var(--sky-blue-dark);
    margin-right: 0.5rem;
}

.qr-size-option select {
    padding: 1.2rem 1.8rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 1.5rem;
    background: var(--white);
    cursor: pointer;
    transition: border-color 0.3s;
}

.qr-size-option select:hover,
.qr-size-option select:focus {
    border-color: var(--sky-blue);
    outline: none;
}

/* ─── TITLE INPUT ─── */
.qr-title-option {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.qr-title-option label {
    font-weight: 500;
    color: var(--deep-navy);
    font-size: 1.4rem;
}

.qr-title-option label i {
    color: var(--sky-blue-dark);
    margin-right: 0.5rem;
}

.qr-title-option input {
    padding: 1.2rem 1.8rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 1.5rem;
    transition: var(--transition);
    background: var(--gray-50);
}

.qr-title-option input:focus {
    border-color: var(--sky-blue);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(135, 206, 235, 0.15);
    outline: none;
}

.qr-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1.2rem;
    margin-top: 0.5rem;
}

.qr-actions .btn {
    flex: 1 0 auto;
    min-width: 90px;
    padding: 1.2rem 1.8rem;
    font-size: 1.4rem;
    border-radius: var(--radius-sm);
    background: var(--gray-50);
    color: var(--deep-navy);
    border: 2px solid var(--gray-200);
    transition: var(--transition);
    font-weight: 600;
}

.qr-actions .btn:hover {
    background: var(--sky-blue);
    color: var(--white);
    border-color: var(--sky-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.qr-actions .btn i {
    margin-right: 0.6rem;
}

/* Display */
.qr-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    padding: 1rem;
}

#qrCodeContainer {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 3rem;
    border: 3px dashed var(--gray-300);
    text-align: center;
    min-height: 380px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    transition: border-color 0.4s ease, border-style 0.4s ease, box-shadow 0.4s ease;
    flex: 1;
}

#qrCodeContainer.has-qr {
    border: 3px solid var(--sky-blue);
    box-shadow: 0 0 0 4px rgba(135, 206, 235, 0.15);
}

#qrCodeWrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.2rem;
    width: 100%;
}

#qrCode {
    display: flex;
    align-items: center;
    justify-content: center;
}

#qrCode img,
#qrCode canvas {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}

/* ─── TITLE DISPLAY ─── */
.qr-title-display {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--deep-navy);
    text-align: center;
    word-wrap: break-word;
    max-width: 100%;
    padding: 0 0.5rem;
    display: none;
}

.qr-title-display.visible {
    display: block;
}

.qr-hint {
    color: var(--gray-500);
    font-size: 1.5rem;
    margin-top: 1.5rem;
    line-height: 1.6;
}

.qr-hint i {
    display: block;
    margin-bottom: 1rem;
    opacity: 0.5;
}

#qrCodeContainer.has-qr .qr-hint {
    display: none;
}

.qr-status {
    font-size: 1.5rem;
    font-weight: 500;
    min-height: 3rem;
    color: var(--gray-500);
    text-align: center;
    padding: 0.5rem 0;
}

.qr-status.success {
    color: #10b981;
}

.qr-status.error {
    color: #ef4444;
}

/* ───────────── RESPONSIVE ───────────── */
@media (max-width: 1024px) {
    .qr-tool-wrapper {
        grid-template-columns: 1fr;
        gap: 4rem;
        padding: 4rem;
        min-height: auto;
    }
    .qr-display {
        order: -1;
    }
    #qrCodeContainer {
        min-height: 300px;
    }
    .qr-hero {
        min-height: 45vh;
        padding-top: 8rem;
    }
    .qr-hero-content {
        text-align: center;
        margin: 0 auto;
        padding: 0 1rem;
    }
    .qr-hero .hero-subtitle {
        margin: 0 auto;
        max-width: 100%;
    }
    .qr-hero .hero-floating-icons {
        display: none;
    }
}

@media (max-width: 768px) {
    .qr-tool-section {
        padding: 5rem 0 7rem;
    }
    .qr-tool-wrapper {
        padding: 2.5rem;
        gap: 3rem;
        border-width: 2px;
        border-top-width: 4px;
    }
    .qr-color-options {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .input-with-button {
        flex-direction: column;
    }
    .input-with-button .btn {
        width: 100%;
    }
    .qr-actions .btn {
        flex: 1 1 45%;
    }
    #qrCodeContainer {
        min-height: 260px;
        padding: 2rem;
        border-width: 3px;
    }
    .qr-hero {
        min-height: 35vh;
        padding-top: 7rem;
        padding-bottom: 2rem;
    }
    .qr-hero .hero-title {
        font-size: 2.8rem;
    }
    .qr-hero .hero-subtitle {
        font-size: 1.5rem;
        padding: 0.5rem;
    }
}

@media (max-width: 480px) {
    .qr-tool-wrapper {
        padding: 1.8rem;
        border-radius: var(--radius-md);
        gap: 2rem;
    }
    .qr-actions .btn {
        flex: 1 1 100%;
    }
    .qr-hero .hero-title {
        font-size: 2.4rem;
    }
    .qr-hero .hero-subtitle {
        font-size: 1.4rem;
        padding: 0 0.5rem;
    }
    #qrCodeContainer {
        min-height: 220px;
        padding: 1.5rem;
        border-width: 2px;
    }
    #qrCodeContainer.has-qr {
        border-width: 2px;
    }
    .qr-hero .hero-badge {
        font-size: 1.1rem;
        padding: 0.6rem 1.5rem;
    }
    .qr-title-display {
        font-size: 1.4rem;
    }
}